Car idle too high?..................?

Question

Hello, I have a 1990 Ford festiva and last night, the car was idling at 2000 rpm on park. I adjusted (screw) the idle adjusting screw to the point where it would no longer turn, but the tachometer still reads it's above 1000 rpm slightly. What could be the problem?

Answer 1

Put the idle adjust screw back where you found it. Once you find and fix the vacuum leak, you won't want that screw backed all the way out. That screw doesn't really control idle in any case. An idle control valve does that while the engine is running.

Country Boy is talking nonsense. Nothing he mentioned can make it idle high.

Answer 2

Remove and clean the idle air control valve and idle speed sensor, Both are inside the throttle body. DO NOT USE CARBURETOR CLEANER. This is a job for CRC Throttle Body Cleaner or CRC Mass Air Flow Sensor Cleaner.



On any 23 year old car, it's time to remove the throttle body from the intake manifold, wire the throttle open and scrub it out with a Green Scotch Brite Pad and CRC Throttle Body Cleaner. It'd going to take a lot of elbow grease to remove all the black crap which is packed inside it.



PS: Poor old blind Micheal. There certainly IS a throttle body valve adjuster

Answer 3

That's pretty good but I'm just wondering where you found the idle adjusting screw on a fuel injected car?



I would look for vacuum leaks.

Answer 4

Remove the idle air control and clean it with carb cleaner. And take a rag with the cleaner on it and do the butterfly in the throttle body

Answer 5

you should not touch the idle screw, it,s set at the factory ! it could be the idle air control sensor is sticking or the throttle body needs cleaned out inside !

Answer 6

Your accelerator is stuck. Use some WD40 and hit it in all the joints that run between the accelerator pedal and the carburetor.