What causes a car to idle rough when hot?
intermittent rough idle after warm up - Hyundai Forums
Check the intake gasket. They seem to crap out around cyl 1 first. It usually sets a misfire code, but perhaps it's just starting to go bad.
Rough Idle when warm. - Honda-Tech - Honda Forum Discussion
The FITV only affects the idle of the car on warm-up. Once it becomes warm, the FITV is inactive. Try unpluging your TPS and see if the stuttering goes away.
Rough idle when hot - YotaTech Forums
Today it really got rough. No diagnostic code. No check engine light. I reset the ECU by pulling the EFI fuse and it started running good again.
Rough Idle When Hot... Fuel Injectors? (305 TPI) - ThirdGen.Org
then unhook the IAC valve. ... although I can't get mine down to 500 rpm in gear. ... since you seem to have a problem only after warm, I would ...
rough idle when motor is warm along with hot weather? [Archive]
If it idles rough, see if you can identify which cylinder or cylinders are misfiring. With the engine running, pull each of the spark plug wires ...
[Resolved] Rough idle when car is warm - Mini Cooper Forum
The informed me that my rough idle was caused by the fuel tank vent valve/ sensor being faulty. Bought the part and replaced it myself, 5 min job.
Rough Idle during HOT weather not COLD????
What has the dealership done if anything to fix this? Typically this is a result of a bad injector or a lifter. Given the temperature factor I ...
Rough Idle on Hot Start, clears up - Chevy HHR Network
You may need new spark plugs. The Ecotecs like the AC Delcos. Spark plugs: 2.2L/2.4L - AC Delco part number 41-103 (iridium) to the ...
Rough Idle and Stalling After Warmed Up - 2CarPros
The IAC is responsible for maintaining the engine idle speed. Also, an excessively dirty throttle body can be the cause as well. One thing you ...
Rough Idle | No Codes - GMTNation
Vehicle has rear heat - so valve is operational. In conjunction with the rough idle - I have noticed that the vehicle is absolutely in need of a ...
Rough Idle in Drive or Reverse (not Park or Neutral) - Maxima Forums
Car now idles rough when stopped, but only when the transmission is engaged. Engine stutters and RPMs jump in response to stuttering (between 800-650 RPM).
Low\rough idle on cold, high idle when warm
This seems to indicate a vacume leak as it gets more air than required when cold and can't compensate with cold start injector and when warm ...
Rough idle when cold | BobIsTheOilGuy
I had a vehicle with that problem.It would spit and miss when cold then run fine when warm.Turned out it was the intake valves caked with carbon ...
Rough Idle When Engine's Warm? *Edit* | Volkswagen Mark IV Forum
Sounds like the throttle body could need a quick cleaning. Pop off the plastic intake pipe after the airbox and maf. Spray carb cleaner in there ...
hot rough idle issue (resolved) | E46 Fanatics Forum
The bad battery isn't causing your issues. You have vacuum leaks, most likely. When you start the car when the engine is cold/cool the engine ...
1G - Rough Idle issues on warm startup. | DSMtuners.com
Would either of these cause idling issues on a DSM? Also, on my Talon, I've also noticed startup issues when the engine was warm, i.e. after ...
Rough idle and stall, but only when hot?
Car starts and runs fine when cold. Idles rough after warmed. Sometimes it may shut down for no reason but starts right up. Fix: also check the ...
Rough idle, worse with A/C off - M5Board
The idle speed is raised when the AC is on, likely why it smooths. You have all the symptoms of a vac leak or bad mafs, but admittedly there are many other ...
Rough idle when warm - - Ranger-Forums - The Ultimate Ford ...
The vehicle is currently experiencing some rough idle issues once the truck has warmed up. It seems to idle just fine for about 5 minutes and then it just ...
Rough idle only when warm - Jeep Wrangler Forum
Rough idle only when warm · 1. Replace IAC (Idle Air Controller) on throttle body. · 2. Clean throttle body. · 3. Fuel injector cleaning treatment.