What would make an EFI Car run Rich?
Thread Starter
Banned
Joined: Jul 2000
Posts: 1,157
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From: Columbus,OH
What would make an EFI Car run Rich?
as topic said what woul make an EFI car run rich?
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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555
Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!
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89 Trans Am Turbo 3.8L All stock 43,000 miles #1053 of 1555
Past Thirdgen:
86 Trans Am w/ built 355TPI with SLP goodies and too much other stuff to List. One sweet *** car, wish I would have had a good enough Job to pay insurance on three cars so I could keep it, but for a 89 Turbo Trans Am w/ Low miles, I think I made the right choice!
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Two things come quickly to mind: Bad O2 sensor and leaking injector.
Possible but less likely is a stuck-closed fuel pressure regulator.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
Possible but less likely is a stuck-closed fuel pressure regulator.
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82 Berlinetta, orig V-6 car, now w/86 LG4/TH700R4. 2.93 limited slip. Cat-back from '91 GTA, Accel HEI SuperCoil. AMSOIL syn lubes bumper-to-bumper. Daily driver, work-in-progress (LG4 w/'87 LB9 block, ZZ3 cam and intake, World 305 heads, Hooker headers & y-pipe, 3" Catco cat & 3" cat-back).
57 Bel Air, my 1st car. 0.030 over 396, 9.7 CR forged TRWs, Weiand Action+, Edelbrock 1901 Q-Jet, GK 270 cam, Magnum rockers, Jacobs Omnipack, 1-3/4" Hedders & 3" Warlock header mufflers, TH400 w/TCI Sat Night Special conv & Trans-Scat shift kit, LT MegaShifter, 3.08 8.2" 10-bolt w/Powertrax, AMSOIL syn lubes bumper-to-bumper. Best 15.1/95.5 @ 5800' Bandimere.
Junior Member
Joined: Jan 2000
Posts: 18
Likes: 0
From: just arrived in TX..by way of NY
Car: 86 Iroc
Engine: tree-fiddy
Transmission: hmm..a 700 or a T5..guess!!
O2 almost usually the culprit!!
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86 Iroc-Z28 350 Edlebrock,Borla,Transgo,B&M,ACCEL,Random Tech,Auburn,Alpine,Rockford Fosgate,Ultra Z's,1LE brakes&swaybars etc....
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86 Iroc-Z28 350 Edlebrock,Borla,Transgo,B&M,ACCEL,Random Tech,Auburn,Alpine,Rockford Fosgate,Ultra Z's,1LE brakes&swaybars etc....
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