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rpmdiag
rpmdiag, Tech and Instructor
Category: GMC
Satisfied Customers: 6991
Experience:  Since 1975
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06 cobalt stalls and runs rough cold, yes the light is on on

Customer Question

06 cobalt stalls and runs rough cold
JA: Is the check engine light on? Does the car stall at idle or when driving?
Customer: yes the light is on on P0171 and P03000 trying to accerate
JA: Are you fixing your Cobalt yourself? What have you tried so far?
Customer: yes
JA: Anything else you want the mechanic to know before I connect you?
Customer: changed coil pack plugs module and MAF cleaned throttle body no change
Submitted: 1 month ago.
Category: GMC
Expert:  rpmdiag replied 1 month ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 1 month ago.

Okay, so you are running lean with variable misfires from all cylinders. This can all be related to a bad coolant temp sensor that is out of calibration causing your engine to run lean. It's best to test t6he senor first before looking for internal vacuum leaks with a smoke machine.

Thanks, Ron

Expert:  rpmdiag replied 1 month ago.

Here's a shot of what a bad sensor looks like that will cause a problem like yours.

Thanks again and please remember to rate me 5 stars and keep this link in case you need me again later on.

Ron

Customer: replied 1 month ago.
computer senor i guess.
Expert:  rpmdiag replied 1 month ago.

It's possible, the testing will confirm it for you.

Thanks again and please remember that I do not get credit for helping you until you rate me and I can still help you afterwards too.

Ron

Expert:  rpmdiag replied 1 month ago.

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

Customer: replied 1 month ago.
Really that's what I get is a guess
Expert:  rpmdiag replied 1 month ago.

Seriously, you want a definite answer when testing the system is required?

Only an idiot would throw parts at problem without doing the diagnostics.

I gave you valid information and this is a pay site. We deserve to be compensated for our time.

Thanks, Ron

Expert:  rpmdiag replied 1 month ago.

I'm more than wiling and happy to walk you through the testing procedures if you have a lab scope and a scan tool. Let me know. We can make guesses all day long and spend money needlessly, let's do it the right way:)

Thanks again, Ron

Expert:  rpmdiag replied 1 month ago.

If you are satisfied with my answer, I would greatly appreciate a 5
star rating now and I will still assist you after you have rated me
too if another question pops up. I don’t get credit for helping you
until you rate me.
Thanks again, Ron

Customer: replied 1 month ago.
Saying that someone is an idiot. And expecting someone to have that type of equipment at home makes you the idiot. If I had that equipment at home I would have never contacted you
Expert:  rpmdiag replied 1 month ago.

I never said you were, I was saying that I was NOT and will not change out good parts.

The equipment is there for a reason, there's no magic here, sorry.

Ron

Customer: replied 1 month ago.
You are talking about a piece of equipment that the normal person don't have
Expert:  rpmdiag replied 1 month ago.
But I did tell you the truth about what needed to be done.
You're shooting the messenger and that's just not fair.
I am sorry that not every persons problem has an immediate remedy, but I can't control that.
Thanks again, and please be fair with me.
Ron