Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi, I'm Chad. Welcome to JustAnswer. I'm reviewing your question and I will be posting your reply ASAP.
hey how are you
1- have you checked for vaum leaks ?
2- did a smoke test or sprayed starting fluid around the intake & see if engine surges up ?
3- what are the fault codes ,check Engine light on?
4- where the parts new,u replaced idle air control valve gasket ?
Please let me know
ASE Certified Technician
get those fault numbers he came up with ?
fuel pump pressure checked,is it up to specs ?
and if you can fuel trim readings at idle ,long term & short term readings if possible , i can be more accurate for you on why ?
well can you get it ?
he needs to check the mass air flow sensor circuit & idle air control valve circuit , is he missing power or ground from pcm
could be pcm issue.
that will be my guess with out the info ii asked for that will most common issue but testing is needed i can not confirm that for you
Please let me know if you need anything else on it