1995 grand prix gt descides when to start

[EDMUND65]

sometimes it will start and other times it wont, it will turn over fine... but what could cause a car to stop starting.... i can drive it for an hr and then park it and it wont start again, just turn over...

[lineguy]

I had a 92 with the same problem. I replaced the ignition module and it fixed the problem.

[EDMUND65]

how much do those run, and is that something i can get from a junk yard? would you have a pic of one?

[GirlInAHotRod]

They are like 90 bucks for a Grand Prix at autozone. Be sure that's what it is before you replace it. You can always take it to a garage to find out, some places will check a car for free, just have to call around.

[EDMUND65]

oh, ok thanks!!! but is there anything else, like i said it will drive around and then park and not start... u know?

[richtazz]

I would check the crank sensor first. Much cheaper and easier to replace. It's a common problem on 3.1's When the car doesn't start, are you getting spark? If not, try a crank sensor first.

[EDMUND65]

it will crank and i get spark, but its a 3.4

[GTPWarrior]

I would agree with tazz on this one I would check you CPS first it is alot cheaper and I had very similiar problems and if it is the CPS it will soon decide to not start at all. That is were I am sitting with mine (3.8L)

[EDMUND65]

how woudl you get it tested? what do you need to take off it?

[BIG-L]

Most of the guys at the GM service center,forget about the CPS failing and there is really no way THAT I KNOW to test it and 99% of the time it wount set an SES.Here is a pic of what it looks like and its behind the harmonic balancer.



Pic of Ignition control module and they arent cheap,$117.35 from GMPartsdirect.com and list price from dealer is $234.70.Your coil packs sit on top of it.

[EDMUND65]

ouch... how bout a junk yard?

[BIG-L]

I would check the crank sensor first. Much cheaper and easier to replace. It's a common problem on 3.1's When the car doesn't start, are you getting spark? If not, try a crank sensor first.

I agree with rich.Id try the CPS first since it is the cheaper of the 2 and for your car they cost 23.47 = shipping thru www.gmpartsdirect and dealer cost is $46.94 or call around at some of your local auto parts stores and ask for a Crankshaft Position Sensor and see what they cost.Then if that dosent do it you may try some salvage yards for the other part.

~Larry~