2002 GMC Truck turns and tries to start just alittle

2002 GMC TRUCK
90,000 MILES • 6 CYL • 4WD • AUTOMATIC
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MUSTANGUY88
  • MEMBER
  • 1 POST
engine will not start turns over but tries then kind of backfires sometimes.. had a one code set p0122 which we replace trottle position sensor..does the same thing ....took feul filter off to check for feul...fuel pump is coming on..dont know what else to ck any help thanks
Dec 28, 2008 at 5:26 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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MICKEY-D
  • CAR REPAIR CONTRIBUTOR
  • 304 POSTS
You need to check the fuel pressure, not just see if fuel is coming out of the line. See if it will start and run if you spray some starting fluid to it. Check the fuel filter, and the fuel pressure regulator, also check the relay for the pump.
Jan 7, 2010 at 1:41 PM
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