Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi there, I am cam. Do you have any codes stored in the computer?
Is the check engine light on?
That is concerning then as the check engine light mist be on when turning the key on. So then we need to see if the ecm is still alive and getting power. Is there a chip installed? Also you state very clearly there no codes, does it connect then to the network to read codes? If you unplug the mass air flow sensor does it set a mass air flow sensor code?
Ok. Also does your scanner show things like the cranking rpm, fuel pressures and stuff like that?
Ok if the ECM is alive then I would be thinking possibly a bad connection at the 2 large connectors on the valve cover or possibly even a failed fuel injection control module.
Ok has it been acting odd recently? Low power? Hard start when hot?
Ok. When you crank it, is there any smoke at all from the pipe?
Is it making oil?
Ok, we really need to see what the actual fuel rail pressure is. I guess injectors are not top of my list again. Starting to lean to the fuel module but I'm not comfortable suggesting it unless we get more hard data.