WHEN STARTING TRUCK WHEN IT IS COLD OR WARM IT ...

1998 Chevrolet Silverado

Tiny

Chooch1

December, 1, 2012 AT 11:43 PM

When starting truck when it is cold or warm, it does not switch off of high idle. When driving for awhile it still does not switch off, once you put it in park it is still on high idle at about 1200rpm. I clean the carburator and idle control valve and it still does not change anything.

1 Answer

Tiny

rasmataz

December, 2, 2012 AT 1:00 AM

-Check/Test the throttle position sensor and look for vacuum leak-also clean out the throttle body/plate-inspect accelerator linkage/cable-Also go to this link: http://www.2carpros.com/articles/engine-idles-too-high

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