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it maybe out of timing or the valve seat is leacking use a compression tester to find out if is the valve leak
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What causes a 1998 Chevrolet 305 engine to idle high?
Check throttle positioning sensor.
What is causing your 1995 astro van to idle very high?
try your tps sensor . means throttle position . may be giving a false reading. /
Where is iat sensor on 1995 Chevrolet 4 wheel drive?
The 1995 model did not use a Idle air tempture sensor ( IAT ) Did not need one for that fuel system.
Why would your 1995 Chevrolet Monte Carlo idle real fast and then real slow rev up and slow down?
A vacuum leak or a dirty or defective Idle Air Control Valve will cause an unstable idle. jd
What causes a 1994 Astro to stall on low revs and on idle speed when it runs fine on freeways and higher revs?
Possibly a stuck or sticking EGR valve.
What would make the rpm go up on its own in a 1995 Chevrolet pickup 1500 diesel?
Most likely, a malfunctioning idle control sensor.
What would cause a 2004 Trailblazer to idle rough?
There are several things that can cause your 2004 Chevrolet Trailblazer to idle rough. The most common causes are a dirty fuel filter or a dirty air filter.
Idle adjustment 1995 Chevrolet s10 pickup truck four cylinder 2.2 liter engine?
To adjust the idle on a 1995 Chevrolet S10 with a 2.2 liter engine, locate the Idle Air Control (IAC) valve, which is usually located on or near the throttle body. Use a flathead screwdriver to turn the adjustment screw on the IAC valve to increase or decrease the idle speed. Make small adjustments and test the idle speed by running the engine to ensure it is at the desired RPM.
What causes the engine to idle so fast on a 1995 Buick Lesabre 3.8?
throttle position sensor believe it or not!
Where is the fast idle thermal valve in a 1997 Chevy astro van located?
Is anyone on line to help me with this question? Where is the fast idle thermal valve in a 1997 Chevy astro van located?
What causes high carbon at idle on smog check 1995 ford ranger 2.3?
ford suck. go Chevy
1995 mitubishi won't idle--what is the problem?
have lost my idle on a 1995 mitsubishi--what is the problem
