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Ask Chris (aka-Moose) Your Own Question
Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Chevy
Satisfied Customers: 47654
Experience:  16 years of experience
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Stumbling and intermittent stalling.

Customer Question

stumbling and intermittent stalling.
Submitted: 11 months ago.
Category: Chevy
Expert:  Chris (aka-Moose) replied 11 months ago.

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.

  • Sorry no one has helped yet.
  • Yes, you have been charged already.
  • Yes, I am aware of the time you asked your question and time I am responding.
  • I will be online a couple more hours after this post.
  • This is not an answer to your question, just an inquiry if your still needing/wanting help. Because I believe I can help.
Customer: replied 11 months ago.

Hi Moose, Yes I would like your help. I am in and out so sometimes my response is not right away too. Thanks

Expert:  Chris (aka-Moose) replied 11 months ago.

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?

Customer: replied 11 months ago.

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.

Expert:  Chris (aka-Moose) replied 11 months ago.

3 g/s would be normal idle specs.

This is my 1st answer, but does not have to be my only answer. You the website and myself expect you to have a great experience with my help. Please let me know if you are pleased by selecting a star rating above or by replying and saying your pleased. Not rating or rating 1-2 stars does not benefit you nor me in any way. Follow up and reply as often and when needed, there is no extra charge to do so.

Thanks Moose.

Customer: replied 11 months ago.

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.

Expert:  Chris (aka-Moose) replied 11 months ago.

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.

Customer: replied 11 months ago.

Car will not start , cranks good with p0230 fuel pump relay circuit. switch relays no start still.

Expert:  Chris (aka-Moose) replied 11 months ago.

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?

Customer: replied 11 months ago.

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)

Expert:  Chris (aka-Moose) replied 11 months ago.

So are you asking for a wire diagram for the pump relay?

Expert:  Chris (aka-Moose) replied 11 months ago.

Hello again Chris here,

  • I am following up with you to see if you got everything you needed from my answer. We're you pleased with my help?
  • If you were not pleased with my help, please let me know by replying so I can help more.
  • This post is coming up on the 7 day mark where it times out. When a post times out, that means it's no longer on my active list (you reply and I may never know it.)

Thanks Chris