miss fire
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Joined: Apr 2003
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From: illinios
miss fire
i got a 91 tbi 305, i get a miss at 3000 rpm's. im not sure why, ive changed everything accept the ecm and the pick up coil. not sre if the new fuel pump is weak or what? any ideas? whould be appreciated
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Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
What kind of fuel pump did you put in? Check fuel pressure if you think it's the pump. Does it do it at idle or under load? Has it only been doing it since you've changed everything, or for a while now?
Supreme Member
Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
Maybe your timing is too far advanced?? It could be that along with a bad knock sensor/ESC module. It could be your pick up coil as well.
Supreme Member
Joined: Dec 2001
Posts: 1,418
Likes: 1
From: Morris, IL
Car: '91 t-top RS; '91 hrdtp Z28
Engine: LO3;383tpi
Transmission: 700r4;very nice 700r4
Axle/Gears: 4.10 zt posi, 3.70 auburn
yes. I've had mine retarded too much before, and it's actually backfired throught the tbi
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