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Dan
Dan, Technician
Category: Pontiac
Satisfied Customers: 23743
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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2007 Pontiac Montana 3.9 has intermittent starting issues.

Customer Question

2007 Pontiac Montana 3.9 has intermittent starting issues. New battery and new starter have been installed.
Submitted: 6 months ago.
Category: Pontiac
Expert:  Dan replied 6 months ago.

Hello, my name is ***** ***** I'm here to help get your problem solved.

Expert:  Dan replied 6 months ago.

During no start do you even hear a click or nothing at all? Thanks.

Customer: replied 6 months ago.
There are 2 clicks I believe. The starter has been replaced, the battery is brand new and reading fine.
Expert:  Dan replied 6 months ago.

Does starter seem to be making the clicking noise? Thanks.

Customer: replied 6 months ago.
for sure. Fuel pump is still good too
Expert:  Dan replied 6 months ago.

Monitor power on large wire going to starter and small wire when trying to start, both should maintain at least 11v. Let me know, thanks.

Customer: replied 6 months ago.
Scanner reads 12.24 all the way to the starter
Expert:  Dan replied 6 months ago.

Use a multimeter to check voltage on both wires going to starter with key in start position. Let me know, thanks.

Customer: replied 6 months ago.
Multi meter reads good
Expert:  Dan replied 6 months ago.

It shows 12.2 voltages on both wires while trying to start? That doesn't make sense.

Customer: replied 6 months ago.
Sorry it was 12.4 on the red wire.
Expert:  Dan replied 6 months ago.

Does the small wire get any voltage while trying to start?

Customer: replied 6 months ago.
The small wire that is attached to the back of the starter/solenoid the one prong connector?
Expert:  Dan replied 6 months ago.

That is correct.

Customer: replied 6 months ago.
Sorry Dan, it's going to have to wait until tomorrow. It's too dark and cold here now. I will let you know tomorrow.
Expert:  Dan replied 6 months ago.

Sounds good, keep me updated. Thanks.

Customer: replied 5 months ago.
Hi Dan, the small wire is reading 11.4.
Expert:  Dan replied 5 months ago.

So with key in start position both large wire and small wire have at least 11.4v?

Customer: replied 5 months ago.
that's right
Expert:  Dan replied 5 months ago.

I'm guessing vehicle is starting right now? If both wires have power that means engine should at least turn over.

Customer: replied 5 months ago.
No, it's still just sounds like click click
Expert:  Dan replied 5 months ago.

Make sure case of starter has good ground. If case has good ground and you are sure both wires have good power then I'd recommend replacing starter again. I'd also manually turn engine over with breaker bar so you know it is not seized. Let me know how it turns out or if you have more questions, thanks.