Mechanics

CHEVROLET SILVERADO GAS PROBLEM

1995 Chevrolet Silverado • 99,000 miles

Idle is at 1300 when start up, when driving I can put truck in neutral and it will hold an idle of about 1800, have replaced the IAC valve and the TPS could something be sending a false signel to the IAC to keep it reving so high, also had code 35 which I have cleared.
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Guest
February 1, 2013.



Clearing codes does nothing as the problem is still there.

Check for the base gasket leaking vacuum. Common issue.

Did you clean all passages in the iac motor?

Roy