Stalling... but only on turns... hm...
Thread Starter
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
Stalling... but only on turns... hm...
Yea, a real puzzler. It started today at lunch, and is easily invoked whenever I want it to happen.
Left... right... it matters not... the service ASR light comes on (due to the H62 in the EBCM, loss of tach signal because the engine stalled) and an H42 in the ECM, something to do with the knock sensor(s) (circuit to ground).
And yes, the obvious one, I filled the tank with gas!! Even so, it had ~7 gallons left. So the fuel pump and/or delivery become less of a probability. I guess it is possibly a bad wiring harness to the fuel pump...
Now... can a grounded knock sensor cause a motor to die? It starts right back up, or, if I straighten out fast enough, it will keep running. I am wondering if the wire to a knock sensor has frayed and is grounding out to the chassis somewhere.
Thoughts?
Left... right... it matters not... the service ASR light comes on (due to the H62 in the EBCM, loss of tach signal because the engine stalled) and an H42 in the ECM, something to do with the knock sensor(s) (circuit to ground).
And yes, the obvious one, I filled the tank with gas!! Even so, it had ~7 gallons left. So the fuel pump and/or delivery become less of a probability. I guess it is possibly a bad wiring harness to the fuel pump...
Now... can a grounded knock sensor cause a motor to die? It starts right back up, or, if I straighten out fast enough, it will keep running. I am wondering if the wire to a knock sensor has frayed and is grounding out to the chassis somewhere.
Thoughts?
Thread Starter
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Le Mans Master
Joined: Aug 2005
Posts: 7,392
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From: Merritt Island, FL
I once had a similar problem in my old 88 IROC. The ground to the fuel pump relay was intermittent in turns. Ran a new ground wire, and all was fine. I diagnosed that via a scantool, watching the fuel pump voltage when the problem occurred... at least that's how I remember it happening, it was almost 10 years ago 
Drifting
Joined: Aug 2006
Posts: 1,326
Likes: 18
From: Los Angeles California
So the service ASR light is meant to come on every time the car stalls? That's kind of weird.
I've got an idea though, go to a gas station and purchase some gasoline. You might be out.
I've got an idea though, go to a gas station and purchase some gasoline. You might be out.
Last edited by LouisvilleLT4; Aug 14, 2007 at 11:49 PM.
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From: Freedom is never more than one generation away from extinction.
St. Jude '03 thru '24
So you probably need to keep the tank below half full all the time....
I'm guessing that since your car has been subjected to continuous sunshine through out the summer, it is needing some rain and nasty weather to wake up some grounds and connector packs.
The turning g's are impacting some wiring? Might try looking for a loose connection, or bad grounding point. Maybe a wire wrapped around the steering shaft?
Eastern cars with all their rust and corrosion easily become problematic when subjected to Kalifornia weather. Maybe you need to drive in some mud puddles and drainage ditches to make it feel at home again.
I'm guessing that since your car has been subjected to continuous sunshine through out the summer, it is needing some rain and nasty weather to wake up some grounds and connector packs.
The turning g's are impacting some wiring? Might try looking for a loose connection, or bad grounding point. Maybe a wire wrapped around the steering shaft?
Eastern cars with all their rust and corrosion easily become problematic when subjected to Kalifornia weather. Maybe you need to drive in some mud puddles and drainage ditches to make it feel at home again.
Le Mans Master
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From: Ft. Lauderdale Fl
Drifting
Joined: Aug 2006
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From: Los Angeles California
Thread Starter
Team Owner
Joined: Aug 2000
Posts: 40,156
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From: San Pedro CA
the fuel pump is a POS... that's a given. Some Carter hunk of junk that has whined since day one. how annoying.
When I filled, the car had about 7 gallons, so that removes fuel delivery, at least pickup problems, I hope. Unless this is one of those annoying situations where the lining within the tank has rotted away.
I drove it this morning, and it seemed fine... odd... I will test it more later.
When I filled, the car had about 7 gallons, so that removes fuel delivery, at least pickup problems, I hope. Unless this is one of those annoying situations where the lining within the tank has rotted away.
I drove it this morning, and it seemed fine... odd... I will test it more later.
Le Mans Master
Joined: May 2000
Posts: 7,033
Likes: 12
the fuel pump is a POS... that's a given. Some Carter hunk of junk that has whined since day one. how annoying.
When I filled, the car had about 7 gallons, so that removes fuel delivery, at least pickup problems, I hope. Unless this is one of those annoying situations where the lining within the tank has rotted away.
I drove it this morning, and it seemed fine... odd... I will test it more later.
When I filled, the car had about 7 gallons, so that removes fuel delivery, at least pickup problems, I hope. Unless this is one of those annoying situations where the lining within the tank has rotted away.
I drove it this morning, and it seemed fine... odd... I will test it more later.
If it did act up on a full tank that's a different story. If it didn't on a full tank but did on a 7 gallon tank I will go with poor fuel pickup.
Thread Starter
Team Owner
Joined: Aug 2000
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From: San Pedro CA
a new twist...
the various warning lights on the DIC, all related to the abs/asr, start flickering... then the speedo display flickers, all at the same time.
The ABS clicks and whirs...
And the alternator is kicking up a whine from hell. I am thinking the rectifier in the alternator has died.
all very strange, indeed.
the various warning lights on the DIC, all related to the abs/asr, start flickering... then the speedo display flickers, all at the same time.
The ABS clicks and whirs...
And the alternator is kicking up a whine from hell. I am thinking the rectifier in the alternator has died.
all very strange, indeed.
Team Owner
Joined: Oct 2004
Posts: 81,241
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From: altered state
St. Jude Donor '05
I woulkd make sure the battery had a full charge on it and try another alternator if yo have one. When they go bad all sorts of weird stuff can hapen, ditto on the battery. Ive had both "test" good but actually be bad. Replaced both, problem solved.
Drifting
Joined: Aug 2006
Posts: 1,326
Likes: 18
From: Los Angeles California
a new twist...
the various warning lights on the DIC, all related to the abs/asr, start flickering... then the speedo display flickers, all at the same time.
The ABS clicks and whirs...
And the alternator is kicking up a whine from hell. I am thinking the rectifier in the alternator has died.
all very strange, indeed.
the various warning lights on the DIC, all related to the abs/asr, start flickering... then the speedo display flickers, all at the same time.
The ABS clicks and whirs...
And the alternator is kicking up a whine from hell. I am thinking the rectifier in the alternator has died.
all very strange, indeed.
Ok, I'll stop.