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| 04:29 AM | ||
| Users Online Now: 1,167 (Who's On?) | Visitors Today: 386,960 | |
| Pageviews Today: 510,133 | Threads Today: 159 | Posts Today: 2,193 |
| 04:29 AM | ||
OK, my turn to ask a car question. | |
| Anonymous Coward User ID: 84808783  United States05/09/2023 09:39 AM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 57389823 United States05/09/2023 09:39 AM Report Abusive Post Report Copyright Violation | |
JustmeTX
(OP) User ID: 84369183 United States05/09/2023 09:42 AM  Report Abusive Post Report Copyright Violation | 2015 Honda with 3.5 L engine "Earth dreams". Quoting: JustmeTX Engine will rarely, like once per trip, stumble when warm and idling in gear at a light. Then the engine revs up to stay running I guess. I have a pretty decent 2 way scan tool. No codes. I was getting a fair number of cylinder misfires. Changed the plugs and the coils. Mileage is around 50,000 miles. Impeccably maintained. I can't find the source of the occasional stumble. It is actually a little dangerous, because when it revs the engine, I am at a light or something and would not like to suddenly lurch through a red light. The other day it did it at a drive through car wash, right when the guy was in front of my hood. I instantly popped it into neutral and stood on the brake. The guy was obviously scared. I tried a crank position relearn, as this scan tool is supposed to have that ability, but it would not work. LIke I said, if I drive the car for a half hour trip, it will do this one time. The rest of the time the car runs perfect. It seemed to do better when I disconnected the battery and let everything reboot, but the issue has returned. I disabled the cylinder management system with a little $100 device I bought a couple years ago (it fools the cylinder management system into thinking the engine is not warm yet. ) , but the problem is recent, so I think unrelated. Just watched the first couple minutes of this one...sounds like exactly what you are experiencing...see if it will be helplful; Yes, I has seen this video before. I even have the Thinkdiag-2 scanner he was promoting. For some reason, it will not do a crank position relearn for me. Not sure why. Justme |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 09:45 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 09:47 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 09:48 AM Report Abusive Post Report Copyright Violation | Might be getting time for a new air filter as well. Last Edited by JustmeTX on 05/09/2023 09:49 AM Justme |
| Anonymous Coward User ID: 85502331 United States05/09/2023 09:49 AM Report Abusive Post Report Copyright Violation | Clogged IACV? Quoting: Anonymous Coward 85502331 Maybe the spool over by the fuel rail is also gunky? Seems like that air valve should be giving a repeatable problem. This issue is very intermittent. LIke once every 30 to 40 minutes of driving. Could be due to the computer being confused by the breathing prob. |
| Anonymous Coward User ID: 85502331 United States05/09/2023 09:50 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 09:51 AM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 79402807 United States05/09/2023 09:52 AM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 77971304 United States05/09/2023 09:53 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 10:16 AM Report Abusive Post Report Copyright Violation | Can't even find the idle control valve. Just took a look. All sorts of strange crap in there. Obviously this is reverse engineered alien technology. :) I might be able to at least get at the throttle plate to clean it. But I am supposed to be working, plus a huge thunderstorm is about to hit. Will resume later. Thanks for all the replies. Justme |
| Anonymous Coward User ID: 84808783 United States05/09/2023 10:19 AM Report Abusive Post Report Copyright Violation | Can't even find the idle control valve. Just took a look. All sorts of strange crap in there. Obviously this is reverse engineered alien technology. :) Quoting: JustmeTX I might be able to at least get at the throttle plate to clean it. But I am supposed to be working, plus a huge thunderstorm is about to hit. Will resume later. Thanks for all the replies. Don't summon GLP unless your ready to work, boy!! |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 10:24 AM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 84774440 United States05/09/2023 10:29 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/09/2023 10:55 AM Report Abusive Post Report Copyright Violation | OK, I will clean the throttle body, and then try to find the idle control valve to make sure I get the right one from Rock Auto or whereever.. Quoting: JustmeTX Might be getting time for a new air filter as well. Another video that might help Thanks, that is very helpful. Justme |
| Anonymous Coward User ID: 79137772 United States05/09/2023 11:12 AM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/12/2023 06:36 PM Report Abusive Post Report Copyright Violation | Just a quick update. The problem resolved by itself. Didn't have to replace the idle air control valve or even clean the throttle body. Did the relearn functions on anything I could get access to with the scan tool and no more idle stumble. Car never ran better, even when new. Thanks for the help. I am sure the idle air valve will need replaced someday, But not today. :) Not too many Top Gun quotes from the latest movie. That's the only one I can think of. The car is crazy fast now. I feel the need, the need, for speed. :) Last Edited by JustmeTX on 05/12/2023 06:37 PM Justme |
| Anonymous Coward User ID: 85161601 United States05/12/2023 06:49 PM Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/12/2023 06:57 PM Report Abusive Post Report Copyright Violation | |
| BFD
User ID: 84308437 United States05/12/2023 07:00 PM  Report Abusive Post Report Copyright Violation | |
| CHERNOBLY
User ID: 85738555  Canada05/12/2023 07:09 PM  Report Abusive Post Report Copyright Violation | |
| JustmeTX
(OP) User ID: 84369183 United States05/12/2023 07:09 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 76806476 United States05/12/2023 07:16 PM Report Abusive Post Report Copyright Violation | I had a 1991 Accord that suddenly was occasionally stumbling and backfiring, especially when accelerating from a stop. Long story short, there was water in the gas, and it came from a gas station like that. Before figuring it out I took it to several mechanics, NOT ONE correctly diagnosed it. They all wanted to play a guessing game and do expensive repairs. ISO-HEET water remover FIXED IT. I bought several bottles and put in a bottle at every fill-up. It improved after the first bottle, but took several bottles and fill ups to completely fix the problem. |
| Anonymous Coward User ID: 76806476 United States05/12/2023 07:19 PM Report Abusive Post Report Copyright Violation | I had a 1991 Accord that suddenly was occasionally stumbling and backfiring, especially when accelerating from a stop. Long story short, there was water in the gas, and it came from a gas station like that. Quoting: Anonymous Coward 76806476 Before figuring it out I took it to several mechanics, NOT ONE correctly diagnosed it. They all wanted to play a guessing game and do expensive repairs. ISO-HEET water remover FIXED IT. I bought several bottles and put in a bottle at every fill-up. It improved after the first bottle, but took several bottles and fill ups to completely fix the problem. I answered that before I saw it was resolved. |
| Anonymous Coward User ID: 3941194 United States05/12/2023 07:21 PM Report Abusive Post Report Copyright Violation | 2015 Honda with 3.5 L engine "Earth dreams". Quoting: JustmeTX Engine will rarely, like once per trip, stumble when warm and idling in gear at a light. Then the engine revs up to stay running I guess. I have a pretty decent 2 way scan tool. No codes. I was getting a fair number of cylinder misfires. Changed the plugs and the coils. Mileage is around 50,000 miles. Impeccably maintained. I can't find the source of the occasional stumble. It is actually a little dangerous, because when it revs the engine, I am at a light or something and would not like to suddenly lurch through a red light. The other day it did it at a drive through car wash, right when the guy was in front of my hood. I instantly popped it into neutral and stood on the brake. The guy was obviously scared. I tried a crank position relearn, as this scan tool is supposed to have that ability, but it would not work. LIke I said, if I drive the car for a half hour trip, it will do this one time. The rest of the time the car runs perfect. It seemed to do better when I disconnected the battery and let everything reboot, but the issue has returned. I disabled the cylinder management system with a little $100 device I bought a couple years ago (it fools the cylinder management system into thinking the engine is not warm yet. ) , but the problem is recent, so I think unrelated. You need to check either the idle air control valve or the electronic gas pedal. I'm going to guess it's the idle air control This right here. It's either a throttle position sensor issue or idle control. A 3rd possibility is it could be from bad gas or vehicle needs a fuel system flush with some good fuel additive like Lucas Deep Clean, BG, Amsoil, Royal purple. THIS IS IT. I HAD IAC PROBS. WITH MY LATE '85 PLYMOUTH RELIANT. BUT, USE '44K'...PUT TWO CANS IN IT WHEN U R ALMOST EMPTY..NEAR BONE DRY AND DO 5 MILES IN THE HIGHWAY. CAPMAN. THEN, A FULL TANK OF SUPER-UNLEADED. |
| BRIEF
User ID: 79662918 United States05/12/2023 07:27 PM  Report Abusive Post Report Copyright Violation | Computer and scan tool will not report or detect fuel related issues...Only electrical problems, and that doesn't include even low fuel pressure from a weak fuel pump...Clogged injector or sticky injector, or series of injectors will likely be the cause of random multiple misfires detected... Last Edited by BRIEF on 05/12/2023 07:28 PM I never forgive and I never forget I am a licensed firearm holder. I will, under protection of law, use lethal force if attacked.  |
| JustmeTX
(OP) User ID: 84369183 United States05/12/2023 10:49 PM Report Abusive Post Report Copyright Violation | Computer and scan tool will not report or detect fuel related issues...Only electrical problems, and that doesn't include even low fuel pressure from a weak fuel pump...Clogged injector or sticky injector, or series of injectors will likely be the cause of random multiple misfires detected... Quoting: BRIEF The amount of data this scan tool gives is mind blowing. Fuel pressure actually is provided if I recall correctly. It gives an incredible amount of live data. I never had any codes, it was just me noticing a stumble when stopped at a red light. For a dongle costing under $100, and containing full data for all vehicles (free for the first year), it is pretty impressive. Basically does what the expensive $5000 scan tools used to do. Maybe a bit more poking around to find the various features, and it has to use your cell phone as the display and interface. I only bought it to confirm that the coil packs were having issues before replacing them. The bi directional features are amazing. Send a signal to turn something on or off and it happens. Not sure what all it can do. But it is a LOT more than I expected. I should carry it around in my pocket. If someone's car has an issue, I can just say, "Excuse me while I whip this out". :) Last Edited by JustmeTX on 05/12/2023 11:17 PM Justme |
| Anonymous Coward User ID: 41664940 United States05/12/2023 10:53 PM Report Abusive Post Report Copyright Violation | |
| Guv’nor
User ID: 80285533 05/12/2023 10:57 PM Report Abusive Post Report Copyright Violation | 2015 Honda with 3.5 L engine "Earth dreams". Quoting: JustmeTX Engine will rarely, like once per trip, stumble when warm and idling in gear at a light. Then the engine revs up to stay running I guess. I have a pretty decent 2 way scan tool. No codes. I was getting a fair number of cylinder misfires. Changed the plugs and the coils. Mileage is around 50,000 miles. Impeccably maintained. I can't find the source of the occasional stumble. It is actually a little dangerous, because when it revs the engine, I am at a light or something and would not like to suddenly lurch through a red light. The other day it did it at a drive through car wash, right when the guy was in front of my hood. I instantly popped it into neutral and stood on the brake. The guy was obviously scared. I tried a crank position relearn, as this scan tool is supposed to have that ability, but it would not work. LIke I said, if I drive the car for a half hour trip, it will do this one time. The rest of the time the car runs perfect. It seemed to do better when I disconnected the battery and let everything reboot, but the issue has returned. I disabled the cylinder management system with a little $100 device I bought a couple years ago (it fools the cylinder management system into thinking the engine is not warm yet. ) , but the problem is recent, so I think unrelated. You need to check either the idle air control valve or the electronic gas pedal. I'm going to guess it's the idle air control Excellent AC Let’s make it 110. XIV |
