LT1 trouble...need some help.
Some background info. 1997 LT1 with 82k. Had to drive the car this winter a little until I got a new dd. Anyways, this problem has occured twice. I'll be driving and the car just shuts off. Kinda stumbles before it shuts off. After a couple tries at cranking it, it will eventually start again and run just fine. No check engine light comes on either. I took it to my mechanic and he put the OBD II scanner on it and he said everthing looked normal. The car idled fine for the whole time he looked at it and the whole way home (about 10 miles there and back). So the next day I go and drive it, it does it again.:confused: I have no clue what it could be? I just replaced the distributor last summer. Any help and insight is greatly appreciated! Thanks, Tyler
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Possibly your fuel pump. Has your fuel filter been replaced recently? Might be that simple.
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Test your ignition module. They are located on the cylinder head so they get heated up and somtimes fail.
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Could still be your optispark. Just cuz you replaced it doesn't mean it isn't bad.
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I'd say get a fuel pressure gauge and tape it to your window. Drive it and watch what happens to the gauge when/before it dies.
If i'm not mistaken, there should be some good fuel pressure even when you turn the car off, so if it drops to zero or decreases before it shuts off then well there ya go lol If not, at least you can rule out fuel pressure stuff |
Sounds like fuel filter.
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Could be a failing ignition switch. $27 part from a dealer and a P.I.T.A. to change.
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Originally Posted by rbaksi
(Post 5248172)
I'd say get a fuel pressure gauge and tape it to your window. Drive it and watch what happens to the gauge when/before it dies.
If i'm not mistaken, there should be some good fuel pressure even when you turn the car off, so if it drops to zero or decreases before it shuts off then well there ya go lol If not, at least you can rule out fuel pressure stuff |
What is norm for fuel pressure during idle? My mechanic checked it, and he said it seemed low to him, but he didn't really know what fuel pressure it should be.
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At idle with the vacuum line detached from the fuel pressure regulator, the pressure should be in the 41-47psi range. With the vacuum line attached, the pressure can drop anywhere from 3-10psi.
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Originally Posted by '94 Bad A Z28
(Post 5248222)
Could be a failing ignition switch. $27 part from a dealer and a P.I.T.A. to change.
I had one of the wires on mine that was loose and when I went to shift on occasion I hit the underside of the dash with my foot and it would kill the car took me a few weeks to find it but it was evident when I saw the plastic melting around the terminal so I got a new switch and put it in(replaced the terminal also).....P.I.T.A no doubt:mad: |
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