Solving Automotive Idle Problems
Solving Idle Problems
I might get more requests about idle issues than any other topic. I think part of the reason is that there are so many possible causes of an idle problem, so it ends up being a common issue. The causes might vary, but most idle problems are caused by a mixture issue. It’s up to you to find the cause of the mixture issue. Once you do, I’m sure you’ll be able to get rid of that idle problem.
Select Your Issue
- The Idle Circuit
- Cleaning Throttle Bodies
- Look for Vacuum Leaks
- Too Much Fuel, Fuel Injector Problems
- Fuel Injector Cleaners, Octane Boosters
- The PCV System
- EGR Problems
- Sensor Problems
- Mechanical Issues
- Engine Mounts
- Solving Idle Problems Closing
15 thoughts on “Solving Automotive Idle Problems”
March 25, 2022 at 3:36 pm
2002 accord V6 j-series sat for a year. New alternator, battery, fuel, pump, spark plugs, etc. idle surge issue and when it happens the TCS light comes on as well.. any ideas? IACV probably
January 26, 2022 at 11:56 pm
I’m having a problem with a 2002 Acura TL type-S. I have codes P0505 and P1519, saying there’s a problem with the IACV. The car is surging at idle, from 1k to 2k RPM. I cleaned the throttle body and the IACV valve and did not help. Replaced the IACV and did the idle relearn procedure and still doing the same. Replace the FICV that right below the IAC and improved a little. It now starts at high RPMS, then starts to surge for s few minutes, then stays between 1450-1550 RPMS. Only does it in Park and Neutral. I’ve checked electrical connections and everything seems fine. Have checked for vacuum leaks or EGR problems and didn’t find anything out of the ordinary. Have replaced and bled the cooling system in the process also. Any suggestions on what to check?
October 4, 2021 at 11:30 pm
ok so my daughter has a 06 scion s/a it has been running as it should and now she is having a issue under a load and at a momentary idle im somewhat savy with motors but mostly chevys with that said i go with my gut and want to start at the tank…. thoughts …. this problem just started about 2-3 days back when she was running late to work and ran low on fuel on her way after work.
September 10, 2021 at 5:13 pm
Own a 2010 Camry LE 2.5L 4cy. Issues are :
Car ENGINE TURNS OFF
1. while making sharp nor slight tuns
2. Engine turns off suddenly for a block straight driving.
3. When car Stalls it can turn engine on again.
4. Car Stalls only when driving
5. When parked, No lights in dashboard. Normal idling. Don’t Stalls and rpm at steady 6,000
July 20, 2021 at 7:31 pm
Having a problem with my 2000 Honda Civic ex when it’s in park and ac is on the car sounds like it wants to stall out and the idel tends to jump. when the ac is off the idle is fine it idles at 500-1000 rpm could it be my (IAC) ?
February 12, 2021 at 3:22 pm
i am currently having this issue. 2003 honda crv 2.4 UK manufactory model. things ive tried, 1)purchased the $300 oem iac , 2) iac relearn procedure 2sec on then 3k rev for 10 without any load, 3) removed the ecu/pcm fuse for 5 min then replace and tried the relearn again, 4) check for vacuum leaks, 5)replaced the pcv incase this was the issue. i initially removed the old iac cleaned it and installed with no luck, this is why i bought a oem replacement. One thing i’ve noticed, when i erase the p0505 code with obd scanner, the crv idles perfect until driven and the check engine light comes back on. hopefully you may have some insight. thank you in advanced
December 22, 2020 at 12:21 pm
I have a Nissan Altima that won’t will crank but won’t stay running,if I hold the throttle down it will run but I’d I release the throttle it dies…please helpppp
September 4, 2020 at 8:41 am
Hey hi everyone, I owned an 95 Honda Civic EJ1 D16y8 block with Z6 head. My problem is that when I started the car it idles fine but once at operating temperature it idles down and shut off. Any help would be appreciated.
August 29, 2020 at 4:03 pm
My 2000 honda accord is just surging i change the water pump now i put everything back together start one crank but the idle just keep reviving ive clean the idle control valve an intake an throttle body with carb cleaner but it still surge up an down from 1500 to 2000 rpm can u help
July 30, 2020 at 3:48 am
Hi ERIC hope you will be doing fine…. i am having a issue with my idle with AC on it drops badly while AC and stays low idle with AC on can you plz help me out…. plz plz plz
July 24, 2020 at 7:45 am
Hello! I have a 1993 Honda Civic EG6. I have an idle problem on it. the engine is sucking. Anyone have this experience and how to solve it.
July 13, 2020 at 2:34 pm
Hi! I have a honda civic lxi 1998 model automatic. My oroblem is that when i turn-on the AC, it will shut down. Kindly advise. Thanks in advance
June 25, 2020 at 9:47 pm
Short and sweet 1993 Honda Accord CB seven. No modifications EX model. I am having the idle issue that is all so common where it fluctuates after it warms up a bit. I have a replaced the idler units in the front of the intake manifold and cleaned throttle body. check for water leaks and air leaks.With no avail. I have purged my water system. I have a video of me running the car and then putting my finger over the top hole in the throttlebody on the side closest to the firewall and idle drops and stays perfect. Does this mean I need to replace the throttle idle sensor?
June 7, 2020 at 3:48 pm
I have a 2005 Silverado 1500 5.3l V8, recently when I am driving and I come to a stop light and im just sitting there in Drive, my battery gauge will move back and fourth and will have a slight rough idle to it when only the gauge is moving, the battery is brand new, what could it be? I know I have stuff plugged in to my 12v ports that I use, the battery gauge doesn’t drop below 14
March 13, 2020 at 4:47 am
Hi, I was changed my mini cooper s r56 oil filter housing gasket and oil feed line and return line. But I foud the turbo is not like before have power, especial I cannot hear the dump valve sound and wastegate looklike not working. the code is P112B, p0340 and p2188. when I was changed before only have p2188.