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91 camaro rs tbi 305 thinking fuel injectors not pulsing

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Old 03-19-2017, 02:46 PM
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91 camaro rs tbi 305 thinking fuel injectors not pulsing

Help! I bumped a wire under the dash(thick red wire)while working on my sons daily driver,and it sparked. It will not run now. I checked all the fuses. It will turn over,has spark but no injector pulse,unless...this is the kicker. If you full the coil wire off the distributor cap the injectors will pulse,you can visually see them spray. I've already changed the icm,but didn't help. Could it be pickup coil,or ecm? I feel terrible about it and need to get it fixed asap for school. Thank you
Old 03-20-2017, 10:59 AM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: 91 camaro rs tbi 305 thinking fuel injectors not pulsing

Sounds like maybe the pu coil is fried.
http://easyautodiagnostics.com/gm/4....ed-icm-tests-6
Old 03-22-2017, 06:08 PM
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Re: 91 camaro rs tbi 305 thinking fuel injectors not pulsing

That's what I'm thinking after replacing the I cm and fuel pump relay. Thanks




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