High rev on startup
WebDec 7, 2024 · On the second start, it will rev up again, but not nearly as high, whereupon it may die or continue to run. If it does die, the third startup typically doesn't cause a rev up. Once running, the motor has a stumble / cough / miss every 3-4 seconds. Once off idle, that cough seems to go away. WebHow to STOP Honda engine High Idle revving surge at COLD start up, Its NOT IAC Wise Monkey 5.58K subscribers 29K views 2 years ago Honda 4 cylinder engines are made to …
High rev on startup
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WebMay 11, 2024 · A car could have a high idle at startup for a few reasons including to control for emissions while the catalytic converter is warming up to operating temperatures or to … WebDec 22, 2009 · At startup, it starts normally and then will rev up to 2000 RPM and slowly rev down to around 700 over the course of about 2 minutes. Sometimes it's slightly rough. Once the motor is warm it idles normally. I'm thinking this is sensor related. MAF or O2 but I'm unsure, whatchu guys think? F FSWerksVP Registered Joined Aug 23, 2000 24,824 Posts
WebApr 21, 2014 · Discussion Starter · #1 · Feb 1, 2010 Its more like a flare up to about 2500 rpm and a slow drop to normal after about a minute. I know cold start idle is a little higher but the rpm is just too high. Anyone have this issue?? I am thinking it is maybe a IAC valve issue. H Higgs Boson Registered Joined Feb 2, 2009 267 Posts #2 · Feb 1, 2010 normal. WebJan 2, 2024 · My 89 F250 4.9L with a 92 ECU will rev up to 1800RPM for about 10 to 20 seconds then drops down to normal. When I start it, I pop the gas pedal once just after it …
WebNov 25, 2024 · on November 25, 2024. When the engine is started for the first time each day, the engine revs way up, and the RPMs gradually go down to normal idle speed. If the engine has recently been started and the engine hasn’t completely cooled off (I.e, it’s been sitting in a parking lot for 30 minutes) it starts normally. WebMay 18, 2014 · This was the start of my idle issue. My RPMs would be high and not come down to 750 and would hang high between shifts (manual trans). I changed the AIC (thinking I screwed it up with the cleaner) and this helped a little, my RPMs come down to 750 now but it takes forever to do so. Now at start up it will run at 2000 RPM for a while and come ...
WebApr 17, 2013 · High idle at start is normal in cold weather. The colder it is, the higher the RPM usually go. Perhaps your car is overdoing it a little, but it usually is normal. especially if it drops back down after a little while (30 second usually. In really cold weather it might take a few minutes to drop to normal idle rpm.
WebMar 7, 2009 · Maintenance Shop - revs high on start up - I was wondering if anyone knows why my truck always revs high on start up no matter what the temp its over 2000rpm for … nist supertrapp downloadWebDec 9, 2006 · 2. When I start my new '06 Tacoma with the 4 litre (2.7 litre) engine, the engine starts and revs around 2K. This seems awfully high to me. Any other vehicle I have driven starts revinng from a cold start at around 1200 rpm. Like all vehicles, the Tacoma soon slows down to around 750 rpm. It is just the initial high revving that gets me concerned. nist summer high school internship programWebMay 1, 2011 · 2003 Mercedes S320 CDi (W220) Joined Apr 17, 2009. 340 Posts. Discussion Starter · #3 · May 11, 2010. Hi and thanks for the quick response. I would be happy with +-1000rpm on startup - think that is about what it was. Car is warm at the moment, just started it and it went to: Neutral : +-1500. as it engages : +-1800. nist synthetic polymer maldi recipes databaseWebMay 5, 2024 · The only thing that has worked is after booting, is to log into windows then shut it down through the start menu. After that to leave it off for 30 seconds then boot it … nurse practitioner in new zealandWebFeb 12, 2011 · The high rev is pretty much always present with a cold start. It is normally a combination of the idle air control valve and enrichment maps in the ecu. Once the coolant temp sensor reads that the engine is heating properly, the ecu lowers the amount of fuel it sends to the engine and the iacv closes. 1 - 8 of 8 Posts nurse practitioner in norwayWebSep 6, 2024 · This seems excessively high for a cold engine start when the outside ambient is over 60F. It also makes it very difficult to back out of the garage without power breaking … nist supply chain riskWebJan 28, 2011 · High revs at startup while it's dry up where all this stuff failed. Ford says this type of failure can be a result of using 3rd party oil filters (fibers break off and clog things) I've always used motorcraft filters. I did buy the car used and have no idea what the guy used before i bought it. nist summer internship