Question about 1995 Chevrolet Astro
Posted by Anonymous on
Change the gasket under the throttle body, you got a chev vacuum leak. common problem
Posted on Apr 15, 2017
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Posted on Jan 02, 2017
SOURCE: Check engine light comes on.
Mine was doing that also.. We changed the two EGR valves, changed spark plugs and wires, and finally cleaned the Mass Air flow Sensor with carburetor cleaner. That seemed to helped the most. You have to take the sensor off to do it.. you can find a youtube video that explains it. Now all I have to do is figure out why my car's RPM's surge when slowing down.
Posted on Jul 04, 2011
SOURCE: 1987 chevy r20 rough idle
Well, the computer is supposed to open the IAC to keep the RPM above 600 or so depending on the load on the engine.
If you have voltage and ground for the IAC it should raise idle speed to at least 1100 when you first start the engine cold.
If that is not happening, I would look for carbon build up in the throttle body. You can apply voltage to the IAC and open it to see if the air passage is open too.
Posted on Jul 26, 2012
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