2004 chevy cavalier is idling to high
Taking your foot off the accelerator.
Try adjusting the idling speed - sounds like idling speed is too low so when you take your foot off the gas it can't idle (Tick over)
Probably wheel bearings or wheels are unbalanced
It is idling. This is hard for an engine to do smoothly.
I'd check the coolant level first, then the thermostat.
There are several things that can cause your Jeep to stall while idling. The timing may be off or your fuel filter may be clogged.
If the car dies while idling, the timing might be off. Other causes can include a clogged fuel filter or a bad spark plug.
Radiator could be plugged or restricted
Could be several reasons but a vacuum leak would be most likely.
There could be many reasons, a vacuum leak is one possibility.
Yes. The tranny will not have enough fluid in it!
Sans other problems, my experience dictates that you have a fuel filter that needs changing. Idling? hardly any pressure through the gas lines. Accelerating? pressure builds and, the fuel filter being clogged somewhat, the gas can't get through, and it's choking, so to speak. Try changing the filter. Get a Chilton's mechanic repair book and look at the trouble-shooting chapter, and look for your problem.
Your engine probably has a vacuum leak
It sounds like you have air in your fuel system.
One of your belts may be loose or in need of belt dressing.
A worn or loose out of adjustment drive belt could be the cause.
You should check the timing and plugs.
my idling on my 2001 ford focus is not idling correct, tried to adjust idling but there is no screw or way to adjust why?
Usually, it is your fan belt slipping due to moister. You can get a spray for it at your local auto store.
it maybe just a timing problem
probably the governor going bad
The spark plug gap can cause the RPMs to fluctuate, while idling. The more probable cause of the fluctuating RPMs is a bad camshaft.