When does the idle surge go away on a car?
It used to surge on deceleration, which has completely gone away. However, if the engine runs for a few minutes, and is restarted before completely warm, it still surges until warm. Of course, now I am chasing another ignition problem.
What causes a car to stall at idle?
Once the engine is warmed up to near the half mark on the temp gauge in the dash the car will stall or try to stall if idling for one minute to five minutes. The rpm’s will drop to 500-800, engine will shake, and either stall out or surge up to 1300 rpm’s before going back down to 1000.
What causes rough idle after engine has heated up?
At this point, if you turn the truck off and back on again, it will idle fine UNTIL you rev the engine at all, at which point the truck will start shaking again, and idling really rough.
When to seek help for a rough idle?
If you need further assistance with your engine running rough after 10 minutes of driving, then seek out a professional, such as one from Your Mechanic, to help you. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
It used to surge on deceleration, which has completely gone away. However, if the engine runs for a few minutes, and is restarted before completely warm, it still surges until warm. Of course, now I am chasing another ignition problem.
What causes a car to have a rough idle when warm?
A vacuum leak is really air entering the engine that hasn’t been noticed by the computer, so the computer commands the proper air/fuel mixture but the leak causes that mixture to become too lean. You wind up with a lean misfire that causes a rough idle when warm.
What causes a hard start when the engine is warm?
Leaking fuel injectors cause fuel to leak into the combustion chamber. That often doesn’t cause problems on a cold start because most of that fuel has evaporated between the last shut down and the cold start. But leaking fuel can cause an extended crank and hard start when hot and then a rough idle for a while when the engine is warm.
Can a bad fuel pressure regulator cause a rough idle?
Once warm, a bad fuel pressure regulator can cause a rough idle by leaning out the mixture due to low fuel pressure. A Fuel filter would not cause a rough idle when warm. A clogged fuel filter would cause far more problems on a cold start when fuel demand is higher.