truck wont run after replacing fuel pump, oil pressure switch and mass air flow sensor
1998 GMC Silverado vortec V8 5.7L
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truck wont run after replacing fuel pump, oil pressure switch and mass air flow sensor 1 Answer
1998 GMC Silverado vortec V8 5.7L
1998 GMC Sierra 1500
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Maintenance & Repair
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Mass air flow sensor 1 Answer
I drive a 2003 GMC Sierra 4.8l v8. When my mass air flow sensor is plugged in, my rpms jump up and down and I have virtually no power. When it’s unplugged, it runs fine, but no gas mileage and it ...
2003 GMC Sierra 1500 Work Truck Extended Cab SB
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Maintenance & Repair
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Rough idle and misfiring at lower rpms. If I stomp on it it seems to run smoother. Replaced fule filter, cap and rotor, pcv valve, crank and cam position sensors, mass air flow sensor,. 1 Answer
After all parts were replaced I disconnected both battery cables and touched them together per a mechanics suggestion to "clear the computer ". Would a dirty egr cause this? Please help.
1997 GMC Sierra 1500 K1500 SL 4WD Extended Cab SB
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Maintenance & Repair
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04 gmc sierra 1500 5.3 died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was zero) anyways checked fire none checked injectors they wasnt working either(built fuel pressure then unplugged fuel relay then turned engine over and the pressure stayed the exact same) i assume it might be the crank sensor but i would think it would throw a code, anyways came back this morning and before doing anything for the hell of it i checked the gas cap and tightened it and it fired up perfect three different times and the last time i let it run and it died after bout 45 seconds (fuel pressure reads 55) and after it died its doing the same thing cranks but wont fire or start 1 Answer
died on me on the highway got it towed home starting going at it, hooked two different scanners to it and not throwing any codes (ecm is working bc the map was reading correctly but also the rpm was...
2004 GMC Sierra 1500
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Maintenance & Repair
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1999 gmc 4.8 mass air flow 1 Answer
I believe my mass air flow is going? when I start the truck it is searching for idle and will stall. is this a sign of the maf going?
1999 GMC Sierra 1500 SLE Extended Cab LB
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Maintenance & Repair
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