Benefit from My Hindsight with Starting/Stalling Problems
Thread Starter
Instructor
Joined: Aug 2007
Posts: 194
Likes: 2
From: Morgantown WV
Benefit from My Hindsight with Starting/Stalling Problems
I just spent 11 days of my life researching in this forum for countless hours and trying everything under the sun to fix my car. We reconditioned the ignition switch 4 times, checked/cleaned (almost) all grounds, even swapped in another PCM. The real fix took 5 minutes. Take a minute or two to read this so you don't make the same mistake I did.
Symptoms:
1. Car starts for a second or two but does not stay started, stalls out.
2. Fuel pump does NOT come on in the RUN key position.
3. "Low oil level" on the DIC.
4. Sporadic codes from a lazy O2 sensor that has been replaced.
5. Hold the key to START and it runs fine though it throws a lot of random codes.
Trouble-shooting:
We all know the broken record by now, CHECK YOUR GROUNDS. Ok, now use this bit of info that I ran across on about day #9. This is what grounds to where. Thanks rustyguns.
http://forums.corvetteforum.com/show...&postcount=419
Note that G105 is the ground for the oil level sensor, fuel pump relay and O2 sensors... all of which I had problems with. That was my very first guess at what was causing this problem since I knew about the grounds from dealing with it last Fall. No idea why but my car fixed itself for 5 months and 1500 miles, until last week.
Now, here is where I really messed up. Thanks Bill Curlee
A nice 2-D diagram for a 3-D car. My first thought, "oh ok, G105 is talking about the grounding strap on the driver's side of the engine". Would have bet my life on it.. the damn line points right at it. No No No.. this is NOT G105. G105 is ON THE BLOCK, UNDER THE CAR.
It's right here but imagine there was a bolt there. This is how we found mine, bolt gone with the wind. Imagine the relief and disguist when we found this after 11 days of trouble-shooting and wasting time/money on fixing the car.
5 minutes later, new bolt in there with a lock washer and lock tite. Fuel pump primes, codes gone, car runs normally. End of story.
Moral of the story - if one person learns from this experience and doesn't waste 11 days of their life looking at the wrong thing with G105, it was worth my 10 minutes to type all this out
Symptoms:
1. Car starts for a second or two but does not stay started, stalls out.
2. Fuel pump does NOT come on in the RUN key position.
3. "Low oil level" on the DIC.
4. Sporadic codes from a lazy O2 sensor that has been replaced.
5. Hold the key to START and it runs fine though it throws a lot of random codes.
Trouble-shooting:
We all know the broken record by now, CHECK YOUR GROUNDS. Ok, now use this bit of info that I ran across on about day #9. This is what grounds to where. Thanks rustyguns.
http://forums.corvetteforum.com/show...&postcount=419
Note that G105 is the ground for the oil level sensor, fuel pump relay and O2 sensors... all of which I had problems with. That was my very first guess at what was causing this problem since I knew about the grounds from dealing with it last Fall. No idea why but my car fixed itself for 5 months and 1500 miles, until last week.
Now, here is where I really messed up. Thanks Bill Curlee
A nice 2-D diagram for a 3-D car. My first thought, "oh ok, G105 is talking about the grounding strap on the driver's side of the engine". Would have bet my life on it.. the damn line points right at it. No No No.. this is NOT G105. G105 is ON THE BLOCK, UNDER THE CAR.
It's right here but imagine there was a bolt there. This is how we found mine, bolt gone with the wind. Imagine the relief and disguist when we found this after 11 days of trouble-shooting and wasting time/money on fixing the car.
5 minutes later, new bolt in there with a lock washer and lock tite. Fuel pump primes, codes gone, car runs normally. End of story.
Moral of the story - if one person learns from this experience and doesn't waste 11 days of their life looking at the wrong thing with G105, it was worth my 10 minutes to type all this out
Last edited by saw22; Apr 19, 2008 at 05:18 PM.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
This is good! Thanks for the info!
Sorry it took so long to find that one! Now since you inspected every other ground you should be good for another twenty years or so
Thanks,Matt
Sorry it took so long to find that one! Now since you inspected every other ground you should be good for another twenty years or so
Thanks,Matt
Instructor
Joined: Jun 2007
Posts: 104
Likes: 0
From: Medford Or
Dustin
