Start with looking for a vacuum leak.
I have checked for vacuum leaks and found none. I have a strong vacuum at all RPM ranges. I did remove the cover on the side of the Throttle Body and I can see the electric motor keeping the butter fly open longer than necessary after revving the engine. I also can disconnect the plug on the Throttle Body, turn the gears to an idle speed of 900 and the car runs great. I can also so say the car has more power with the Throttle Body disconnected. It seems the computer is telling the Throttle Body to keep the butter fly open.
Idle speeds can vary from 500 to 1200 rpm
The computer controls idle speed between 600-1200 rpm.The computer controls idle speed between 600-1200 rpm.
It is normal for the idle to be this high on a cold engine immediately after it is started. It should drop back to 1,000 or less in a few seconds. If not the fast idle solenoid could be bad.
The idle adjuster screw on a 1984 Venture 1200 is shaped like a star. It is?ælocated on the left side of the carburetor and can be difficult to reach.
there is no "fast idle solenoid" there has'nt been a fast idle adjustment on passenger cars in over 20 years
Apporximately 1200 RPMS
The computer will set the idle between 600 and 1200 rpm.
Idle speed is computer controlled. It is not adjustable. It can vary from 550-1200 rpm.
Idle slows down to a stall when you stop or slow down when AC is running. How do I adjust idle or is something else wrong?
My 91 rx7 idles at 1000-1200, which i believe is the norm.
There are many ways you could cure a rough idle. You must first diagnose why the problem started in the first place.
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