Question about 1999 Chevrolet K1500
It is a vaccuum leak but its not at the egr valve the proble is te vaccuum canister on the opposite side from the battery the can rusts out on the bottom and begins to leak. you can plug the lines to test and see if its the proble.
Posted on Oct 29, 2008
Is the check engine light on ? if it idling high chances are you have a vacuum leak take a can of carb cleaner and spray the egr valve and if the engine rpm changes replace egr valve the throttle body may also be plugged pull the vacuum line off the map sensor start vehicle and see if you have vacuum if not remove throttl body and clean vacuum passage hope this helps
Posted on Oct 05, 2008
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Posted on Jan 02, 2017
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