Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
I have seen as one of the bigger issues with the engine coolant temp sensor sending a false signal telling the engine computer that it is warm when in fact it is cold.If you have not had this checked this should be done to see if the engine coolant temp sensors are sending a false signal needing replaced.If these are or were checked and found o.k. let me know so we can continue.
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Were the fuel pressure regulators on the injector units checked to see if any are leaking down at all into the intake as the engine is off after warmed up or when cold?
No problem.Let me know what you come up with here.