Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.working after noon till just after midnight.
Hi Moose, Yes I would like your help. I am in and out so sometimes my response is not right away too. Thanks
Since you needing MAF specs, what readout does your scan tool show. Are you looking for G/S or voltage?
What is your elevation or zip code?
sea level Orlando fl.
I don't remember the spec. I have to check again but what is normal.
I thought the calculated load at idle was around 5-10 %. I got 30-33.
3 g/s would be normal idle specs.
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Thanks. I think I will try a MAF sensor. Is there any other numbers I should look at that would point to the MAF sensor. On full throttle it went to 99% which is good but the idle # is bad I think (it was at 30-33). The stft was -20.
At idle your shirt term trims should be close to 0 with an allowable spec of +/-10.
Those readings means its running rich and the computer is taking away fuel by reducing the injector on time.
Car will not start , cranks good with p0230 fuel pump relay circuit. switch relays no start still.
Since the issue prior was a running issue and now its a no start concern we need to change our focus.
With the key on what is the fuel pressure?
Is there ignition spark while cranking?
While cranking is there injector pulse?
It is a problem in the fuel pump relay circuit. Cranked good would not start. 30min later and started good and ran good.
A shop install a new pump assembly (complete) and relay (3 weeks ago)
So are you asking for a wire diagram for the pump relay?
Hello again Chris here,