V6 Engine backfires, stumbles and shuts off HELP!
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Location: Florida
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Car: 91 Vert, 69 SS, 91 Coupe
Engine: V8, V8, V6
Transmission: Auto, Auto, 5 speed
V6 Engine backfires, stumbles and shuts off HELP!
Ok guys I need your help. A few weeks ago, we installed pacesetter headers on my sons 91 coupe.. thats another story.. Well the issue we have is now only at certian times, when the car is around 200 degrees, the car backfires through the exhaust when you accellerates, stumbles, chugs and then shuts itself off! Yikes... Cant seem to figure out why.. it did it to me today while driving. Only mod is headers, car has no EGR valve or smog equipment. I pulled the plugs, they look clean. Injectors are about 6 months old, cap, rotor, wires, coil, all other sensors have been replaced within the last 6 months.. ideas?? I dont need him driving it and cutting off. Its a 5 speed if that makes any difference.
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Join Date: Dec 2010
Location: iowa
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Car: 1992 Pontiac Firebird
Engine: 3.1 v6 MPFI
Transmission: world class T5
Axle/Gears: 3.42
Re: V6 Engine backfires, stumbles and shuts off HELP!
mine did that but it was my rotor. it cracked. now it runs like a champ
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theshackle
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09-17-2020 08:26 AM