Engine dies when set to lower than 12°
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Supreme Member
Joined: Dec 2000
Posts: 1,128
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From: UCIrvine or SFV, CA
Car: 1999 Pontiac Trans Am
Engine: LS1 - 346 ci
Transmission: 4L60E
Engine dies when set to lower than 12°
This is following my no start problem. (which I fixed w/ a new cap & rotor, but I noticed the hold down clamp was loose) I checked the timing tonight, and w/ the EST disconnected it says 20°. I could get it to 12° (stock is 10°) but then lower than that, it dies. Signs of a worn timing chain? jeeez, I know I love this car but why doesn't it love back?
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Stock 2.8 MPFI auto w/ Flowmaster 80 Series, More to come......
Pioneer DEH-11
Targa E-910 7-Band Equalizer w/ crossover
2x 10" Pioneer subs powered by 300 Watt Jensen amp
2- 6x9" Pioneer (rear)
More to come..... (hey, i dont got a job yet)
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Stock 2.8 MPFI auto w/ Flowmaster 80 Series, More to come......
Pioneer DEH-11
Targa E-910 7-Band Equalizer w/ crossover
2x 10" Pioneer subs powered by 300 Watt Jensen amp
2- 6x9" Pioneer (rear)
More to come..... (hey, i dont got a job yet)
Supreme Member
Joined: Jan 2001
Posts: 1,116
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From: Rio Rico, AZ 85648
Car: 1989 IROC-1
Engine: L98
Transmission: 700r4
Hang in there. Gremelins come and go. When they are there, you're fed up and ready to push it off of a cliff... Fortunately, most of the time they are not there and your car is a blast. You know all of those commercials out right now about cars that are fun to drive.....Those cars aren't that much fun, but our cars are.
I would suggest that you check the basics. It's been my experience, that when I have a weak idle, to the point of stalling, there is something simply just worn out. Fouled plugs (especially after your last problem), faulty wires, ignition module possibly and so on.
I haven't had the unfortunate experience yet, but maybe even a vacuum leak.
I'd pull a spark plug just to look at it and see. If they are fouled, or even just tired, change 'em out. While you're at it, a set of wires might not be a bad idea. I've had good luck with Bosch wires on all of my cars.
I would suggest that you check the basics. It's been my experience, that when I have a weak idle, to the point of stalling, there is something simply just worn out. Fouled plugs (especially after your last problem), faulty wires, ignition module possibly and so on.
I haven't had the unfortunate experience yet, but maybe even a vacuum leak.
I'd pull a spark plug just to look at it and see. If they are fouled, or even just tired, change 'em out. While you're at it, a set of wires might not be a bad idea. I've had good luck with Bosch wires on all of my cars.
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Joined: Jan 2000
Posts: 19,660
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V6,
First, you may not be able to trust the timing marks on the balancer ring. 13 years of starts, stops, oil rot, dry rot, heat, and normal forces on the rubber isolator ring (not to mention blipping the throttle) can move the outer balancer ring from its original position. It is possible that the timing chain has stretched or slipped, but that can be fairly easy to check. If you have a piston stop (a.k.a. a converted old spark plug) or even a good flashlight and mirror, you can check the TDC marking pretty quickly.
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Later,
Vader
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If you want to beat the World, it might reach up and pull you down...
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First, you may not be able to trust the timing marks on the balancer ring. 13 years of starts, stops, oil rot, dry rot, heat, and normal forces on the rubber isolator ring (not to mention blipping the throttle) can move the outer balancer ring from its original position. It is possible that the timing chain has stretched or slipped, but that can be fairly easy to check. If you have a piston stop (a.k.a. a converted old spark plug) or even a good flashlight and mirror, you can check the TDC marking pretty quickly.
------------------
Later,
Vader
------------------
If you want to beat the World, it might reach up and pull you down...
Adobe Acrobat Reader
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