Engine runs with erratic idling, once reved at random check light comes on and idling stabilizes but it can only rev up to 3 with pedal completely down floor
Sounds like a low fuel pressure issue or a stuck open egr valve/air leak.
Sounds like a low fuel pressure issue or a stuck open egr valve/air leak.
SOURCE: erratic idling revs up and down, check engine
There is a small electric motor call IDLE AIR CONTROL (IAC).
It add rpm when there is load like headlight,radio,power window while you at idle.
Just to bump up the power a little to keep everything operate smoothly.
When IAC is not functioning it will give you uneven idle.
Get the OBD-II code and repost. It will help you to get to the real problem.
OBD-II connector is 18" from the center of the lower dashboard. Scanner is about $50 to start.
SOURCE: Engine runs rough after about ten minutes /idles really low
Just trowing some suggestions out there, but, I would check the idle air control valve (solenoid) or the throttle position sensor. If they check out then my last guess would be the map sensor or the vaccuum to the map sensor. Hope I was able to help. Best wishes.
SOURCE: engine revs up and down
Sounds like a bad IAC motor, or a vaccuum leak, or low coolant... I would definately start with checking these things first
SOURCE: 2005 AVEO - at idle the engine revs up and down
check your fuel cap when they start to go bad the pressure in the tank won't read and it will make it do that. and if it still does it then try cleaning the throttle body and the mass air flow sensor when they get dirty they can cause the same problem
SOURCE: rough eratic idling
Check the idle air bypass valve see if dirty, cleanable unit. you check the working of valve by powering the unit with 12 volts. check map sensor too.
1,594 views
Usually answered in minutes!
×