have you checked your FUEL FILTER lately? Or the fuel pump may be going out. Can you describe it if feels like it is NOT getting fuel? Or is it stumbling like it is getting too much fuel? Does it idle in Park, Drive, Reverse? The more info you can post the better answer or leads you will get to solving your problem.
When driving the IAC does not do anything because the car is not at an idle
I had my "distributor pick-up" replaced. car would just die out, while i was driving.
A serious vacuum leak could cause that.
One thing that would cause your 1999 Pontiac Montana to stall at idle is the idle being set too low. You should raise it to see if that fixes the problem.
Check the EGR valve. It sounds like your EGR valve is staying open. An EGR valve that is open at idle will cause a car to stall. An EGR should be closed at idle and open when you are driving around.
Just fixed this, was a loose vacuum line next to intake
It depends on the gearing of the car. If you are in the highest gear and 40mph in that gear is under the idle rpm of that car than you will stall.
intake gasket is leaking
Had a Jeep in the shop here with that problem last week and it turned out to be low fuel pressure. Try running a fuel pressure test. The Jeep would idle ok but when you tried to accelerate the engine would stall.
CHECK COIL PACKS
Try cleaning the EGR valve.
Usually, a jeep's engine stalls in idle mode because of a battery power fault or because there is no gas. However, it is common for any car to stall when it has not been running for a period of time and the engine is cold.
My 94 escort was doing the same thing. I replaced the throttle valve assembly and that seems to have done the trick. Hopefully that helps you out.
Stalling at idle? Immediately after starting? While driving? While stopping? Cold or hot engine? What engine do you have?
Your idle reglator needs to be adjusted so it idles at a higher rpm
check pcv hose elbow for vacuum leak.
Could be a vacuum leak. The year and engine info would help us help you.
An engine usually has a higher idle speed when the ac is running. If the high speed idle does not operate then the ac will cause the engine to stall.
tough question, but i had a similar problem. it would stall at idle. i had cleaned up my idle air control motor (located on the throttle body) and have not had another problem with it. tough question, but i had a similar problem. it would stall at idle. i had cleaned up my idle air control motor (located on the throttle body) and have not had another problem with it.
Why would it stall or almost stall in Reverse but not in Drive? How long since it's received a tune-up and thorough check-up? How is the compression?
I would suggest that the Choke is switching off and then the idle is set too low
sounds like you need some freon.
the engine to stall and surge at idle
A bad fuel pressure regulator will cause the car to stall or not run .
a bad idle sensor control valve to start with or your egr valve has a vaccum leak