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I'm a Master Mechanic! Ask me anything!

 
Anonymous Coward
User ID: 17635688
United States
12/10/2019 12:25 AM
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Re: I'm a Master Mechanic! Ask me anything!
I've got a jetta 2005 TDI. It has a "rawring" sound at 40mph and above.

the guy at Midas said it was my throw-out bearing. I said I didn't think so because the throw-out bearing only rotates when you put the clutch in. And besides if I put the car in neutral, turn off the engine it still makes the noise. So I assume it has to be unrelated to engine.

I took it to a German car repair place. I said I thought it was a rear wheel bearing. They diagnosed it and said yes and the front one too. They wanted a lot of money.

I didn't think it was the "front one too" so took it back to Midas and told them please replace the rear wheel bearing.

They did and it seemed beetter but I've still got the same issue only not as loud. Hmm perhaps the front bearing is bad as well.

the Midas guys sugested it might be the throw-out bearing. :)

When I go aroud a curve (turning to the left the sound disapears)

What do you think? the car has about 150K on it. Midas said they checked all the wheel bearings and found some play in the right rear but not the others.

Any help would be much appreciated!

Cheers!
Anonymous Coward
User ID: 71313352
Germany
12/10/2019 12:30 AM
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Re: I'm a Master Mechanic! Ask me anything!
Well...I'm a Masterbater, ask me anything!
 Quoting: Anonymous Coward 78220684


Are you yanking my crank, or yours? lmao
 Quoting: CosmicFire

Did you just learn what a motor was?
Blue State Rebel

User ID: 73724632
United States
12/10/2019 12:30 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
SoulWinner

User ID: 58577065
United States
12/10/2019 01:17 AM

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Re: I'm a Master Mechanic! Ask me anything!
Wife's van makes buzzing sound, but only in reverse. Reminds me of alternator sound, but replaced that about 10k miles ago.
 Quoting: SoulWinner


Was the transmission recently replaced or any other work done? If so the dust shield may be bent and making contact. The torque converter likes to move forward in reverse gear due to the higher charge pressure.

If not you may have a cracked flex plate or loose converter bolts. Hold the steering wheel hard right and see if it gets louder by loading the engine.
 Quoting: CosmicFire

Thanks! Now I know where to start looking. No recent tran or other work.
 Quoting: SoulWinner


more likely a solenoid in the transmission, there may be no "fix" necessary if there isn't any other malfunction. the old saying goes if it ain't broke, don't fix it
 Quoting: Anonymous Coward 78230525


Thanks!
...Loving souls, starving trolls...
Anonymous Coward
User ID: 78238609
Australia
12/10/2019 01:20 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
 Quoting: Blue State Rebel


You need to cut it out and weld plates in. Putty (what we call "bog") is just a bandaid solution. Good primer and coating afterward. If not a coated area then spray on fish oil can mitigate further corrosion (no joke it works)
Anonymous Coward
User ID: 78238951
Malaysia
12/10/2019 01:24 AM
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Re: I'm a Master Mechanic! Ask me anything!
What is this website turning into?
Blue State Rebel

User ID: 73724632
United States
12/10/2019 01:33 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
 Quoting: Blue State Rebel


You need to cut it out and weld plates in. Putty (what we call "bog") is just a bandaid solution. Good primer and coating afterward. If not a coated area then spray on fish oil can mitigate further corrosion (no joke it works)
 Quoting: Anonymous Coward 78238609



Thank you! Have you heard of using Coca Cola on rust? How's that?
Golfcart
User ID: 77110102
United States
12/10/2019 01:53 AM
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Re: I'm a Master Mechanic! Ask me anything!
Performance headers vs stock headers...HP gain ?
 Quoting: SoiledBottom


Depends on the chassis. Cast iron logs vs long tube headers? 5-20 HP. Performance oem manifolds, vs crappy block hugger headers? You may lose power.
 Quoting: CosmicFire


We just put “performance” headers on a T100 and now the supercharger won’t boost past 4, do headers affect boost??
 Quoting: Golfcart 77110102


People look at boost as a measure of performance, when it isn't. If you make the engine more efficient and able to breather easier, your boost pressure will be lower. Boost is merely the amount of restriction present. The bigger question is, did it make more power with the headers? If it did, congratulations. You're making more power with cooler air and less parasitic draw on the supercharger.
 Quoting: CosmicFire


That’s exactly what I would want to hear, you’re a real cat! Thank you.
Anonymous Coward
User ID: 53069355
United States
12/10/2019 01:55 AM
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Re: I'm a Master Mechanic! Ask me anything!
I've got a jetta 2005 TDI. It has a "rawring" sound at 40mph and above.

the guy at Midas said it was my throw-out bearing. I said I didn't think so because the throw-out bearing only rotates when you put the clutch in. And besides if I put the car in neutral, turn off the engine it still makes the noise. So I assume it has to be unrelated to engine.

I took it to a German car repair place. I said I thought it was a rear wheel bearing. They diagnosed it and said yes and the front one too. They wanted a lot of money.

I didn't think it was the "front one too" so took it back to Midas and told them please replace the rear wheel bearing.

They did and it seemed beetter but I've still got the same issue only not as loud. Hmm perhaps the front bearing is bad as well.

the Midas guys sugested it might be the throw-out bearing. :)

When I go aroud a curve (turning to the left the sound disapears)

What do you think? the car has about 150K on it. Midas said they checked all the wheel bearings and found some play in the right rear but not the others.

Any help would be much appreciated!

Cheers!
 Quoting: Anonymous Coward 17635688


if it goes way while turning I'd say its output shaft bearing on the left side.
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:01 AM
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Re: I'm a Master Mechanic! Ask me anything!
...


Depends on the chassis. Cast iron logs vs long tube headers? 5-20 HP. Performance oem manifolds, vs crappy block hugger headers? You may lose power.
 Quoting: CosmicFire


We just put “performance” headers on a T100 and now the supercharger won’t boost past 4, do headers affect boost??
 Quoting: Golfcart 77110102


People look at boost as a measure of performance, when it isn't. If you make the engine more efficient and able to breather easier, your boost pressure will be lower. Boost is merely the amount of restriction present. The bigger question is, did it make more power with the headers? If it did, congratulations. You're making more power with cooler air and less parasitic draw on the supercharger.
 Quoting: CosmicFire


That’s exactly what I would want to hear, you’re a real cat! Thank you.
 Quoting: Golfcart 77110102

higher boost pressure with any given configuration equals more power..this guy is full of shit. while it is true reducing restrictions will increase power and lower boost pressure with any given supercharger setup, if you put a smaller pulley on the supercharger you'll have more boost and thus more power with the less restricted engine
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:02 AM
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Re: I'm a Master Mechanic! Ask me anything!
I've got a jetta 2005 TDI. It has a "rawring" sound at 40mph and above.

the guy at Midas said it was my throw-out bearing. I said I didn't think so because the throw-out bearing only rotates when you put the clutch in. And besides if I put the car in neutral, turn off the engine it still makes the noise. So I assume it has to be unrelated to engine.

I took it to a German car repair place. I said I thought it was a rear wheel bearing. They diagnosed it and said yes and the front one too. They wanted a lot of money.

I didn't think it was the "front one too" so took it back to Midas and told them please replace the rear wheel bearing.

They did and it seemed beetter but I've still got the same issue only not as loud. Hmm perhaps the front bearing is bad as well.

the Midas guys sugested it might be the throw-out bearing. :)

When I go aroud a curve (turning to the left the sound disapears)

What do you think? the car has about 150K on it. Midas said they checked all the wheel bearings and found some play in the right rear but not the others.

Any help would be much appreciated!

Cheers!
 Quoting: Anonymous Coward 17635688


if it goes way while turning I'd say its output shaft bearing on the left side.
 Quoting: Anonymous Coward 53069355


could also be a cv assembly on either side.
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:09 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
 Quoting: Blue State Rebel


You need to cut it out and weld plates in. Putty (what we call "bog") is just a bandaid solution. Good primer and coating afterward. If not a coated area then spray on fish oil can mitigate further corrosion (no joke it works)
 Quoting: Anonymous Coward 78238609


fiberglass "tiger hair" can work if you get all of the rust out before you slather it on. if you bondo or fiberglass over any rust it will immediately rust out again, but if you do what we used to do and use wire mesh for a form and do it carefully it can last for ten years..the best way is to weld in new rocker panels
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:11 AM
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Re: I'm a Master Mechanic! Ask me anything!
...


if you're not sure of the firing order check it manually with the valve covers off. The rotor in the distributor should be pointing to the spark plug wire that goes to the cylinder on which both valves are closed. If it isn't, simply unplug the wire from the spark plug and route it to the right one. Once you get the firing order correct have someone crank the engine while you turn the distributor slowly through it's adjustment range until it starts, then use a timing light too get it perfect. There should be timing mark on the harmonic balance or front crankshaft pulley and a marking on the block to line it up with. if the timing keeps changing even though you're not turning the distributor replace the timing chain, it's stretched
 Quoting: Anonymous Coward 78237507


I put on a brand new timing chain and all the pumps are new everything is new even the crankshaft I appreciate everything you've done
 Quoting: Anonymous Coward 77377605


When is it firing back through the manifold (idle)? Are you using a distributor with vacuum advance and if so are you running it off the timed vacuum port on the carb?
 Quoting: 300BLK


No I plugged off the timed advance and it pops at speed not at idle
 Quoting: Anonymous Coward 77377605

firing with valves partially open
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:26 AM
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Re: I'm a Master Mechanic! Ask me anything!
...


Why do you think they got rid of the dipsticks? Because people couldn't leave well enough alone and manufacturers found their warranty claims dropped when they stopped giving people access to the fluid.

You're going to give yourself an expensive headache. One thing about being cheap is knowing when there is a time to be cheap. This ain't it.
 Quoting: CosmicFire


You can't honestly believe that ANY fluid is good for 200k? This car is something we'll keep till paid off. So knowledge is power.

And to your point, once past their WARRANTY PERIOD, they don't give a shit about your trans or otherwise. but they'll gladly charge you 10k for a rebuild.
 Quoting: Anonymous Coward 75282507

the transmission fluid on a modern automatic transmission is good for the life of the trnsmission. if it is ruined, the transmission ruined it, meaning replacing the fluid will not fix it and might make it slip, i speak from extensive experience
 Quoting: Anonymous Coward 78230525


I rebuild transmissions and that's nonsense! The reason many transmission fail, is because the oil is NEVER CHANGED. As such, the oil becomes gritty and helps clutch action. Once that fluid is changed, the grit is gone, causing clutch failure. People that regularly change their fluid and don't abuse their shit get 300k plus. I speak specifically about GM transmissions here.

Those that never change their oil will not make 300k PERIOD! Oil breaks down and it's really that simple!

LIFETIME fluid is meant to live the life of the manufacturers Warranty, nothing more!

Imagine a Manufacturer making a fluid that is good for 300k miles. Yeah f'ing right!
 Quoting: Anonymous Coward 75282507

whatever floats yer boat...

if the transmission is never overheated or isn't slipping or have disintegrating parts, the filter will remove any wear particles in the oil and it will last the life of the vehicle. transmissions are designed with this in mind. Generally speaking if the oil has been overheated or is contaminated with metal or clutch particles the transmission is already shot. I've had a few go over 400k without changing or even adding transmission fluid ...viscosity breakdown in engine oil is due mainly to cylinder blow by and heat. the life of the average automatic transmission is around 250k, anything beyond that is probably because the vehicle was driven gently.
Golfcart
User ID: 77110102
United States
12/10/2019 02:35 AM
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Re: I'm a Master Mechanic! Ask me anything!
...


We just put “performance” headers on a T100 and now the supercharger won’t boost past 4, do headers affect boost??
 Quoting: Golfcart 77110102


People look at boost as a measure of performance, when it isn't. If you make the engine more efficient and able to breather easier, your boost pressure will be lower. Boost is merely the amount of restriction present. The bigger question is, did it make more power with the headers? If it did, congratulations. You're making more power with cooler air and less parasitic draw on the supercharger.
 Quoting: CosmicFire


That’s exactly what I would want to hear, you’re a real cat! Thank you.
 Quoting: Golfcart 77110102

higher boost pressure with any given configuration equals more power..this guy is full of shit. while it is true reducing restrictions will increase power and lower boost pressure with any given supercharger setup, if you put a smaller pulley on the supercharger you'll have more boost and thus more power with the less restricted engine
 Quoting: Anonymous Coward 53069355

Smaller pulley is ordered, boost went down just after headers were installed, had to pull f-ing engine to deal with broken exhaust stud, that only took weeks !!
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:39 AM
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Re: I'm a Master Mechanic! Ask me anything!
06 caravan. Drive for a few miles and pull into a parking lot and coolant gushes onto the ground for a few seconds then stops. I havnt been present for this but it seems to happen at random. Have to add a gallon of coolant every 2 weeks.
 Quoting: Anonymous Coward 77307194


You could be overfilling it, there is a line on the coolant reservoir and you fill it up to that line with a cold engine... if you fill it up to the top , when the engine heats up the coolant expands and is forced out. the key phrase is "I pull into parking lot and coolant gushes out and then stops". this is because when air stops flowing over the radiation as fast, the coolant heats up in the cooling system and expands and the excess coolant drains through a small hose on the reservoir to t e ground, if it were a leak in the hoses, radiator, water pump seal or gaskets it would continue to leak.
Golfcart
User ID: 77110102
United States
12/10/2019 02:42 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
 Quoting: Blue State Rebel


You need to cut it out and weld plates in. Putty (what we call "bog") is just a bandaid solution. Good primer and coating afterward. If not a coated area then spray on fish oil can mitigate further corrosion (no joke it works)
 Quoting: Anonymous Coward 78238609


fiberglass "tiger hair" can work if you get all of the rust out before you slather it on. if you bondo or fiberglass over any rust it will immediately rust out again, but if you do what we used to do and use wire mesh for a form and do it carefully it can last for ten years..the best way is to weld in new rocker panels
 Quoting: Anonymous Coward 53069355


The owner of a Buick century doesn’t sound like some one to weld in body panels or anything close to proper body work, no offense...just clean the windshield and call it good, wait, don’t even do that and just watch TV.
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:44 AM
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Re: I'm a Master Mechanic! Ask me anything!
...


People look at boost as a measure of performance, when it isn't. If you make the engine more efficient and able to breather easier, your boost pressure will be lower. Boost is merely the amount of restriction present. The bigger question is, did it make more power with the headers? If it did, congratulations. You're making more power with cooler air and less parasitic draw on the supercharger.
 Quoting: CosmicFire


That’s exactly what I would want to hear, you’re a real cat! Thank you.
 Quoting: Golfcart 77110102

higher boost pressure with any given configuration equals more power..this guy is full of shit. while it is true reducing restrictions will increase power and lower boost pressure with any given supercharger setup, if you put a smaller pulley on the supercharger you'll have more boost and thus more power with the less restricted engine
 Quoting: Anonymous Coward 53069355

Smaller pulley is ordered, boost went down just after headers were installed, had to pull f-ing engine to deal with broken exhaust stud, that only took weeks !!
 Quoting: Golfcart 77110102


gezuz.
the next time you have a rusted exhaust manifold bolt or stud that wont turn try getting it loose with the engine hot, sometime it makes just enough difference you can get it out. if not, have fun, steel studs rusted into cast iron are a bitch

cruise
Anonymous Coward
User ID: 53069355
United States
12/10/2019 02:46 AM
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Re: I'm a Master Mechanic! Ask me anything!
I think you may have missed me.

Is there really any good way I can get the rust off my lovely 2002 Buick Century (myself)? On the body below the doors. Or repair rust damage? I've heard putty might work?

I love this car but I can't afford to have them do the rust again - last time they just did a crappy job. I won't be able to afford another car for another couple of years.

Thank you!
 Quoting: Blue State Rebel


You need to cut it out and weld plates in. Putty (what we call "bog") is just a bandaid solution. Good primer and coating afterward. If not a coated area then spray on fish oil can mitigate further corrosion (no joke it works)
 Quoting: Anonymous Coward 78238609


fiberglass "tiger hair" can work if you get all of the rust out before you slather it on. if you bondo or fiberglass over any rust it will immediately rust out again, but if you do what we used to do and use wire mesh for a form and do it carefully it can last for ten years..the best way is to weld in new rocker panels
 Quoting: Anonymous Coward 53069355


The owner of a Buick century doesn’t sound like some one to weld in body panels or anything close to proper body work, no offense...just clean the windshield and call it good, wait, don’t even do that and just watch TV.
 Quoting: Golfcart 77110102

it has one of the best v-6 engines ever built in it.
Anonymous Coward
User ID: 78021633
Canada
12/10/2019 02:47 AM
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Re: I'm a Master Mechanic! Ask me anything!
A short time before the cold weather started, my Corolla 2015, stopped blowing cold air when A/C turned on. No noticeable leaks. What else could be wrong?
 Quoting: Anonymous Coward 78021633


Will it blow cold in defrost with the temp set to cold?
 Quoting: CosmicFire


Hard to differentiate manufactured cold air from current cold outside air. Just feels like normal outside air right now. Are you trying to suggest that when we hit really cold days, it might not defrost correctly ?
Anonymous Coward
User ID: 53069355
United States
12/10/2019 03:12 AM
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Re: I'm a Master Mechanic! Ask me anything!
A short time before the cold weather started, my Corolla 2015, stopped blowing cold air when A/C turned on. No noticeable leaks. What else could be wrong?
 Quoting: Anonymous Coward 78021633


Will it blow cold in defrost with the temp set to cold?
 Quoting: CosmicFire


Hard to differentiate manufactured cold air from current cold outside air. Just feels like normal outside air right now. Are you trying to suggest that when we hit really cold days, it might not defrost correctly ?
 Quoting: Anonymous Coward 78021633


sometimes the air conditioner is working fine but the cold air isn't being directed into the car because its stuck in the vent outside air mode. if you put it on defrost sometimes it will work. does the heater seem to work good?

There are several things that can cause the ac to quit working, ac compressor clutch is most common if it quits suddenly, loss of refrigerant if it gradually stops working Sometimes it's a fuse or switch failure and sometimes the clutch itself. If it is noisy under the hood when the ac is on the compressor is gone. Open the hood, turn on the ac and see if the center part of the ac compressor clutch is turning. if it is, it means it's low on refrigerant or the mixer system isn't working right. if it isn't, try running leads directly from the battery to the clutch , negative to the terminal the black wire from the wire harness is connected to, and positive to whatever other color there is with engine running and ac turned on. If it works it's the switch, wiring or fuse. If it doesn't the ac compressor clutch needs replacing. This and loss of refrigerant through a leaking compressor seal .
Anonymous Coward
User ID: 53069355
United States
12/10/2019 03:15 AM
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Re: I'm a Master Mechanic! Ask me anything!
A short time before the cold weather started, my Corolla 2015, stopped blowing cold air when A/C turned on. No noticeable leaks. What else could be wrong?
 Quoting: Anonymous Coward 78021633


Will it blow cold in defrost with the temp set to cold?
 Quoting: CosmicFire


Hard to differentiate manufactured cold air from current cold outside air. Just feels like normal outside air right now. Are you trying to suggest that when we hit really cold days, it might not defrost correctly ?
 Quoting: Anonymous Coward 78021633


sometimes the air conditioner is working fine but the cold air isn't being directed into the car because its stuck in the vent outside air mode. if you put it on defrost sometimes it will work. does the heater seem to work good?

There are several things that can cause the ac to quit working, ac compressor clutch is most common if it quits suddenly, loss of refrigerant if it gradually stops working Sometimes it's a fuse or switch failure and sometimes the clutch itself. If it is noisy under the hood when the ac is on the compressor is gone. Open the hood, turn on the ac and see if the center part of the ac compressor clutch is turning. if it is, it means it's low on refrigerant or the mixer system isn't working right. if it isn't, try running leads directly from the battery to the clutch , negative to the terminal the black wire from the wire harness is connected to, and positive to whatever other color there is with engine running and ac turned on. If it works it's the switch, wiring or fuse. If it doesn't the ac compressor clutch needs replacing. This and loss of refrigerant through a leaking compressor seal..... .
 Quoting: Anonymous Coward 53069355

.....are the most likley causes
Anonymous Coward
User ID: 78090965
Canada
12/10/2019 03:22 AM
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Re: I'm a Master Mechanic! Ask me anything!

I've got a jetta 2005 TDI. It has a "rawring" sound at 40mph and above.

the guy at Midas said it was my throw-out bearing. I said I didn't think so because the throw-out bearing only rotates when you put the clutch in. And besides if I put the car in neutral, turn off the engine it still makes the noise. So I assume it has to be unrelated to engine.

I took it to a German car repair place. I said I thought it was a rear wheel bearing. They diagnosed it and said yes and the front one too. They wanted a lot of money.

I didn't think it was the "front one too" so took it back to Midas and told them please replace the rear wheel bearing.

They did and it seemed beetter but I've still got the same issue only not as loud. Hmm perhaps the front bearing is bad as well.

the Midas guys sugested it might be the throw-out bearing. :)

When I go aroud a curve (turning to the left the sound disapears)

What do you think? the car has about 150K on it. Midas said they checked all the wheel bearings and found some play in the right rear but not the others.

Any help would be much appreciated!

yodaC.V. joint, brother
Anonymous Coward
User ID: 53069355
United States
12/10/2019 03:25 AM
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Re: I'm a Master Mechanic! Ask me anything!
A short time before the cold weather started, my Corolla 2015, stopped blowing cold air when A/C turned on. No noticeable leaks. What else could be wrong?
 Quoting: Anonymous Coward 78021633


Will it blow cold in defrost with the temp set to cold?
 Quoting: CosmicFire


Hard to differentiate manufactured cold air from current cold outside air. Just feels like normal outside air right now. Are you trying to suggest that when we hit really cold days, it might not defrost correctly ?
 Quoting: Anonymous Coward 78021633


sometimes the air conditioner is working fine but the cold air isn't being directed into the car because its stuck in the vent outside air mode. if you put it on defrost sometimes it will work. does the heater seem to work good?

There are several things that can cause the ac to quit working, ac compressor clutch is most common if it quits suddenly, loss of refrigerant if it gradually stops working Sometimes it's a fuse or switch failure and sometimes the clutch itself. If it is noisy under the hood when the ac is on the compressor is gone. Open the hood, turn on the ac and see if the center part of the ac compressor clutch is turning. if it is, it means it's low on refrigerant or the mixer system isn't working right. if it isn't, try running leads directly from the battery to the clutch , negative to the terminal the black wire from the wire harness is connected to, and positive to whatever other color there is with engine running and ac turned on. If it works it's the switch, wiring or fuse. If it doesn't the ac compressor clutch needs replacing. This and loss of refrigerant through a leaking compressor seal .
 Quoting: Anonymous Coward 53069355

oh, and i forgot one possibility, if the compressor clutch isn't engaging it is possible it is because the ac relay is shot but this is rare, if the relay isn't supplying current to the clutch it usually means there is something else wrong, it could even be the computer not allowing the ac to come on for some reason like a faulty sensor in the cooling system. if you run leads directly to the ac compressor clutch and it works fine, you have ruled out mechanical failure and are left with electrical. it can be a bitch to diagnose ac problems if they're electrical in nature
Anonymous Coward
User ID: 53069355
United States
12/10/2019 03:26 AM
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Re: I'm a Master Mechanic! Ask me anything!

I've got a jetta 2005 TDI. It has a "rawring" sound at 40mph and above.

the guy at Midas said it was my throw-out bearing. I said I didn't think so because the throw-out bearing only rotates when you put the clutch in. And besides if I put the car in neutral, turn off the engine it still makes the noise. So I assume it has to be unrelated to engine.

I took it to a German car repair place. I said I thought it was a rear wheel bearing. They diagnosed it and said yes and the front one too. They wanted a lot of money.

I didn't think it was the "front one too" so took it back to Midas and told them please replace the rear wheel bearing.

They did and it seemed beetter but I've still got the same issue only not as loud. Hmm perhaps the front bearing is bad as well.

the Midas guys sugested it might be the throw-out bearing. :)

When I go aroud a curve (turning to the left the sound disapears)

What do you think? the car has about 150K on it. Midas said they checked all the wheel bearings and found some play in the right rear but not the others.

Any help would be much appreciated!

yodaC.V. joint, brother
 Quoting: Anonymous Coward 17635688

thats one of two probabilities i listed above
Anonymous Coward
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12/10/2019 03:34 AM
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Re: I'm a Master Mechanic! Ask me anything!
Well...I'm a Masterbater, ask me anything!
 Quoting: Anonymous Coward 78220684


Are you yanking my crank, or yours? lmao
 Quoting: CosmicFire

Did you just learn what a motor was?
 Quoting: Anonymous Coward 71313352


he's an unemployed graduate of some trade school

cruise
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12/10/2019 03:37 AM
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Yes Sir
 Quoting: Anonymous Coward 77377605


The Machinist even balanced the crankshaft with the new flywheel which is a standard 4 speed in my Ford F-350
 Quoting: Anonymous Coward 77377605

take your rod out and give the crank another turn, and recheck it.
 Quoting: CosmicFire


cruise

be careful who you piss off, jackoff. some people take it personally and there was no need to be an asshole
Anonymous Coward
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12/10/2019 03:43 AM
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Re: I'm a Master Mechanic! Ask me anything!
My engine shakes really badly, it started literally overnight after a friend had overfilled the oil. motor mounts have been replaced and fully checked and didn't make a single difference. Every other part of the engine that could possibly cause the problem has been fixed or checked. the only way to lower the vibration is to put it in neutral. It doesn't shake while moving down the road but if you are in drive at a stoplight it drives me out of my mind. The whole thing rattles.
What's your diagnosis?

PS... It's an 06 Hyundai Elantra GLS with 122 k miles and very well maintained the entire time. And yes, I did have the friend remove the oil but it seemed to be too late.
 Quoting: Anonymous Coward 65944145


It might have fouled out a spark plug. I'd put some fresh ones in and do a compression test while you're there.
 Quoting: CosmicFire


As I mentioned, anything and everything has been replaced. I have new NGK plugs and wires, made no difference, just a little extra power, so more shaking, lol.
Golfcart
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12/10/2019 03:48 AM
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That’s exactly what I would want to hear, you’re a real cat! Thank you.
 Quoting: Golfcart 77110102

higher boost pressure with any given configuration equals more power..this guy is full of shit. while it is true reducing restrictions will increase power and lower boost pressure with any given supercharger setup, if you put a smaller pulley on the supercharger you'll have more boost and thus more power with the less restricted engine
 Quoting: Anonymous Coward 53069355

Smaller pulley is ordered, boost went down just after headers were installed, had to pull f-ing engine to deal with broken exhaust stud, that only took weeks !!
 Quoting: Golfcart 77110102


gezuz.
the next time you have a rusted exhaust manifold bolt or stud that wont turn try getting it loose with the engine hot, sometime it makes just enough difference you can get it out. if not, have fun, steel studs rusted into cast iron are a bitch

cruise
 Quoting: Anonymous Coward 53069355

Steel stud in aluminum, our other truck broke the same stud, had to pull motor on it also, Toyota’s trucks are easy to work on thankfully.My 19 year old kid has been a mechanic for two years now at a dealership in town, he’s tired of working on cars by the time he gets off work lately.
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12/10/2019 03:56 AM
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if you're not sure of the firing order check it manually with the valve covers off. The rotor in the distributor should be pointing to the spark plug wire that goes to the cylinder on which both valves are closed. If it isn't, simply unplug the wire from the spark plug and route it to the right one. Once you get the firing order correct have someone crank the engine while you turn the distributor slowly through it's adjustment range until it starts, then use a timing light too get it perfect. There should be timing mark on the harmonic balance or front crankshaft pulley and a marking on the block to line it up with. if the timing keeps changing even though you're not turning the distributor replace the timing chain, it's stretched
 Quoting: Anonymous Coward 78237507


I put on a brand new timing chain and all the pumps are new everything is new even the crankshaft I appreciate everything you've done
 Quoting: Anonymous Coward 77377605


When is it firing back through the manifold (idle)? Are you using a distributor with vacuum advance and if so are you running it off the timed vacuum port on the carb?
 Quoting: 300BLK


No I plugged off the timed advance and it pops at speed not at idle
 Quoting: Anonymous Coward 77377605


It is firing with valves partially open, I already told you how to solve it. when the engine is turning slowly the valves have time to completely close with weak valve springs but as engine rpm increases the valves don't close all the way before it fires.

If you put higher lift cam in any engine the least you can expect to have to do is uses stiffer valve springs that are designed to be compressed further than stock ones because the spring has to move the valve further in the same period of time.. When the stock springs are over-compressed by a high lift stage 3 cam they weaken and cant close the valves fast enough. As i said, it is also a good idea to use roller type rocker arms to deal with the higher spring tension. there is no cheap way to get reliable increases in horsepower, thats rule number one





GLP