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Search Auto Parts Search 95 GMC Sierra Sign up here!   Email This Post Auto Repair Home>> Truck Repair>> Truck Engine Repair papac New User May 14, 2019, 7:27 AM Post #1 of 4 (7537 views)      95 GMC Sierra   I have a 95 GMC Sierra 5.7 that when accelerating it will pop back through the exhaust and throttle body at low to mid throttle but after that it picks up and goes on. Also it dies at times and this morning it died and wouldn't start for about 30 min, put gas in TBI but wouldn't start immediately. It did start after a few min. after gas was poured in. Drove home about 15 miles with usual hiccups. No engine codes I did replace the ignition module a few months ago and replace EGR valve a few weeks ago. (This post was edited by papac on May 14, 2019, 8:30 AM) Tom Greenleaf Ultimate Carjunky / Moderator May 14, 2019, 8:55 AM Post #2 of 4 (7527 views)      Re: 95 GMC Sierra   '95 Model year so OBDI - codes not helpful just yet. Stop "pouring gas" down a throttle body and use something flammable or real starting fluid for test. Put air intake parts back on before trying. It worked so it lacks fuel "delivery" now next I'd listen for fuel pump report sounds and when without starting. Same time check fuel pressure AND that it holds. If just too low but holds fuel pump not capable but slow down. Check that wiring to it is good at connections up right to it. Also check for power when it should be pumping with a helper just turn key to run not start it primes for a couple seconds, catch right then. Chances are you need a new fuel pump but don't just toss parts test and check as what you are doing both wastes $$ and ads the chance new something isn't installed right, wrong one or doesn't work new. Test away or get it diagnosed only if you can then decide if you want or are able to do the job. Tank will have to come out, fuel neck OK for reuse and lower fuel so you can manage it if it gets to that, T papac New User May 15, 2019, 4:18 PM Post #3 of 4 (7496 views)      Re: 95 GMC Sierra   I found my problem, I replaced the plugs and wires which took care of the backfiring. I also replace the ignition control module to take care of the dying issue. Hammer Time Ultimate Carjunky / Moderator May 15, 2019, 4:43 PM Post #4 of 4 (7493 views)      Re: 95 GMC Sierra   Sounds good............I'll close this now as solved. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Email This Post   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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