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A vacuum leak can do that. Check the gasket at the base of the throttle body for leaks. It was common for that gasket to crack and allow a vacuum leak. With the engine running, spray carb cleaner around the base of the throttle body. If the idle changes briefly while you are spraying that area you have found the leak.
What else can I help you with?
Does the vehicle speed sensor control the idle in a Chevy blazer s10 1989 2.8?
No it does not.
Where is the idle speed motor located at on a 1995 Chevy blazer?
Where is the idle speed motor located at on a 1995 chevy blazer?
Why does Chevy blazer have rough idle and engine shake at idle?
Check the motor mounts.
How do you adjust the idle on a 95 Chevy Blazer 43 liter V6?
it is not adjustable, it is controlled by the computer.
How do you adjust idel on a 1995 Chevy Blazer?
the idle is controlled by the computer should be about 700 rpm's
How do you adjust the idle on 1992 Chevy s10 blazer?
You don't, it is done by the ECM (Engine Control Module).
Where is the idle control sensor on a 1994 Chevy blazer v 6 4.3 vortec?
The IAC (Idle Air Control) is located in the base of the throttle body.
What causes high engine idle and surges in the 1989 Corvette?
The cause of high engine idle and surges in the 1989 Corvette is due to..Read More
What can cause 1989 Ford F-250 to idle high?
a vacuum leak can cause high idle
Where Is The idle air control valve on a 2002 Chevy blazer 4dr 4x4 4.3 liter?
located on the throttle body
How do you adjust the idle on a 1995 Chevy Blazer?
if your having trouble with your idle clean or check your idle air selonoid located on the side of your throttle body, or you may need a tune up. You don't. It is computer controlled.
Were to find the idle on 1989 Chevy Corsica?
cuantas millas por galon hace un chevi corsica 1989?
