Chevy 3500 350 gas

Asked by Jun 09, 2017 at 08:49 PM about the 1994 Chevrolet C/K 3500 Cheyenne Crew Cab LB RWD

Question type: General

I busted the top water pump hose fixed it but
flooded top of motor didn't run hot now it will not
shift right and is idled high put all new vacuum
lines new egr and still idled high and not shifting
any suggestions

2 Answers

21,555

Possibly need to open up all electrical connection one at a time and spray with contact (electrical board) cleaner and apply dielectric grease before reconnecting. Go back and make sure there is not any vacuum leaks, including intake gasket.

525

The coolant temp sensor could have gone bad. Iv seen plenty of times on these trucks that sensor go bad and make truck not run right. Also the throttle position sensor going bad will do this as well.

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