intermittent no start
#1
intermittent no start
I have a 1995 Pontiac Bonneville 3800 that has a starting problem. This is an intermittent problem that after running and sitting for twenty minutes or more it will not start. It will crank but there is no spark. It has never had a problem when first started in the morning. I assume it cannot be a pass key II issue because it will crank. After it finally starts it run fine. Any help will be appreciated, it has been doing this for a year and slowly getting worse, any time I leave the car with my mechanic it works fine. HELP!
#2
Senior Member
True Car Nut
Welcome to Bonneville Club. Some possibilities: Bad battery cables, bad ground bus, bad ground for PCM, bad ground for ICM, bad Crank Position Sensor, bad Powertrain Control Module.
#4
Welcome to Bonneville Club. Some possibilities: Bad battery cables, bad ground bus, bad ground for PCM, bad ground for ICM, bad Crank Position Sensor, bad Powertrain Control Module.
Bad cables ? I could crank the engine
Bad ground bus. where is it? I will clean it.
For all how do I test. It doesn't start warm, I crank, wait 5 minutes and retry it will restart within
the hour.
Thanks for the help!!
Lenny
Bad cables ? I could crank the engine
Bad ground bus. where is it? I will clean it.
For all how do I test. It doesn't start warm, I crank, wait 5 minutes and retry it will restart within
the hour.
Thanks for the help!!
Lenny
#5
Senior Member
True Car Nut
Originally Posted by flberk
Bad cables ? I could crank the engine
Bad ground bus. where is it? I will clean it.
For all how do I test. It doesn't start warm, I crank, wait 5 minutes and retry it will restart within
the hour.
Thanks for the help!!
Lenny
Bad ground bus. where is it? I will clean it.
For all how do I test. It doesn't start warm, I crank, wait 5 minutes and retry it will restart within
the hour.
Thanks for the help!!
Lenny
On your 95, the common ground bus is under the carpet below the driver side kickplate near the front of the front door. PCM ground is near oil filter. ICM ground is underneath ICM (coils) on long bolt.
To do diagnostic tests to isolate the specific problem, you need to be ready to do the tests at the time the car is acting up. There are a lot of guys here with the Factory Service Manual that provides those diagnostics, but no one has the expensive Tech II tool that is often required. To fix it when it is starting fine is more challenging and more expensive, but not impossible.
It could be that none of the items I mentioned above will resolve your problem, but if you are patient with us, we will be patient with you and keep working with you until you get it fixed. There is an unbelievable amount of Bonneville repair expertise here. We will try to approach things that are most likely to be the problem as you describe it, or are cheap or free to check and repair.
#7
Senior Member
Posts like a Northstar
Re: intermittent no start
Originally Posted by flberk
I have a 1995 Pontiac Bonneville 3800 that has a starting problem. This is an intermittent problem that after running and sitting for twenty minutes or more it will not start. It will crank but there is no spark. It has never had a problem when first started in the morning. I assume it cannot be a pass key II issue because it will crank. After it finally starts it run fine. Any help will be appreciated, it has been doing this for a year and slowly getting worse, any time I leave the car with my mechanic it works fine. HELP!
I'm wondering if you hear the fuel pump running in the tank for a couple seconds when you turn the key on?
Fuel pressure regulator?
#8
How do you get it started?
Just wait couple of minutes then crank and repeat .
How long does it take? could be a hour
I'm wondering if you hear the fuel pump running in the tank for a couple seconds when you turn the key on? I do hear the fuel pump
Fuel pressure regulator? It is not a fuel problem. I put a spark plug tester on the wires
and have no spark!
Thanks
Lenny Berk
Just wait couple of minutes then crank and repeat .
How long does it take? could be a hour
I'm wondering if you hear the fuel pump running in the tank for a couple seconds when you turn the key on? I do hear the fuel pump
Fuel pressure regulator? It is not a fuel problem. I put a spark plug tester on the wires
and have no spark!
Thanks
Lenny Berk