try changing your TPS (throttle positioning sensor) its located on the intake area (look where the throttle cable hooks to the engine) Possibility of a fuel pressure regulator problem. Also a faulty Idle Air Control motor (IAC) could cause the problem. ask a local repair facility for assistance. I had that problem with my grand prix. Replaced everything I could think of. turned out to be that the computer needed to be reset. possibly a vacuum leak...check hoses, you may need to replace you intake maniflod gasket
idle airflow metre or pipe may have come off carb check both
A vacuum leak can cause that.
Check the Idle Air Control. It might have carbon deposits and need cleaning. Also do the same for the throttle body intake. It might also need cleaning.
A vacuum leak or a dirty or defective Idle Air Control Valve will cause an unstable idle. jd
vacuum leak, bad idle control sensor
intake gasket is leaking
no, you should let it idle and warm up a little bit.
Sit in the car in neutral, rev the car to 2000 revs then apply the break firmly whilst still holding the car at 2000 revs. If the idle drops back down then the car is drive by wire... so ive been told anyway! :)
change the TPS sensor, (throttle position sensor).
What car is it? what year? is it a diesel or petrol? could be you r base idle?? but need know more info..... does it stall in drive with foot on brake? does it rev high?my car is a 07 Chevrolet Colorado,standar