1997 Pontiac Sunfire Potiac Sunfire 1997 won't start/stall

Tiny
EDALEJ50
  • MEMBER
  • 1997 PONTIAC SUNFIRE
1997 Pontiac Sunfire 4 cyl Front Wheel Drive Manual

Hi.

I have this Sunfire for 2 days now. Sometimes it will start and most of the time it will not. It will start for 5 to 7 minutes and then it will stall or die. It has a good spark. Just replace the fuel pump and the cam sensor but it's doing the same thing. Checked already all the fuses and relays they were all ok.

Your help on this matter is highly appreciated.

Sincerly yours,
Ed
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Sunday, April 19th, 2009 AT 11:01 AM

8 Replies

Tiny
JAMES W.
  • MEMBER
Ed, if you're sure you have good spark on crank, we need to find out what's missing. Ie, fuel pressure or injector pulse. I see you've changed fuel pumps, how about filter? Please advise.
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Sunday, April 19th, 2009 AT 1:39 PM
Tiny
EDALEJ50
  • MEMBER
Hi everybody,

Thanks and appreciate for your response. This afternoon, after coming from church with family again I spend most of my time in my garage to find what causes the problem which make me have 2 sleepness night.

Just have a printout of the wiring diagram( Engine Performance Circuits) from Mitchell Automotive Repair Information and traces every wire. I want to share to all what I did to solve the problem. There's an open circuit(broken wire) half way under the rad. It's dk grn/wht wire from PCM to fuel pump relay. What happen is that. Once the broken wire come in touch with each other it will start, but due to small vibration or rough road there comes the problem.

Once again, my sincere thanks to you guys. Now, I'll be part of the community helping each other.

Best regards,
Ed
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Sunday, April 19th, 2009 AT 10:40 PM
Tiny
JAMES W.
  • MEMBER
Glad you found it, Ed. Who would have thought? A person could have looked for that problem for weeks.
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Sunday, April 19th, 2009 AT 11:48 PM
Tiny
EDALEJ50
  • MEMBER
Good morning everyone,

I'm just around to ask, give advice and help if needed. And I'm still learning to add more on what I have now.

See you guys and rest assure you will hear more from me.

Best regards,
Ed
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Monday, April 20th, 2009 AT 7:16 AM
Tiny
JAMES W.
  • MEMBER
May sound like a dumb question Ed, but who are you?
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Monday, April 20th, 2009 AT 8:45 PM
Tiny
EDALEJ50
  • MEMBER
Hi,

I'm just an ordinary automotive technician from Philippines living and working here in Canada. Not all tech even those master as what they called themselve knows everything. There are moments where we are lost. Like myself, I've been working with cars all my life but still learning. Usually nowadays cars are becoming high tech every now and then.

I just come accross your website looking for somebody who can help me solve the problem on that Pontiac Sunfire. That Sunfire is a challenge for me. I'm not ashamed asking others of something I don't know. That way, I learned from them.

Like now, I've got another problem with Pontiac Bonneville SE 2003. Another Pontiac. I have it scan and I got this code P0443B evap purge solenoid control circuit. Replace Purge solenoid, replace the burn purge solenoid wiring harness connector, checked ign1 fuse where maf sensor and vent solenoid share the same fuse/circuit and make sure there's no open circuit from evap purge solenoid to PCM. But no luck. Maybe you guys can help me on this.

Sincerely yours,
Ed
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Monday, April 20th, 2009 AT 9:37 PM
Tiny
JAMES W.
  • MEMBER
Ed, what's the 8th digit on your VIN? There are 2 3.8s listed and it makes a difference in the wiring diagrams.
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Tuesday, April 21st, 2009 AT 4:04 AM
Tiny
EDALEJ50
  • MEMBER
Hi James,

Good morning, I'm getting ready to go to work now. I'll have you posted when I get the 8th VIN#. The problem still exist on that Bonneville because everytime you clear the code. It always come back.

This is how I get the problem, for you to have an idea. Car came in with an engine light. Checked the code and got MAF and Vent solenoid problem. Replace the Vent solenoid(found not working due to mad) clear the code but comes back later. Found a blown fuse( ign1) due to that burn/damage wiring harness connector going to the evap purge solenoid. Replace it plus the solenoid. Clear the code. Still the problem exist. Engine light comes back after awhile.

Well, got to go to work.

Thanks,
Ed
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Tuesday, April 21st, 2009 AT 7:31 AM

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