1989 GMC Truck

1989 GMC TRUCK
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MCCONNCD
  • MEMBER
  • 1 POST
1989 GMC Truck V8 Four Wheel Drive Automatic

When I start to accelerate it starts spitting and sputtering and tries to die. I have replaced the MAP sensor, Idle Control sensor, EGR valve. I don't know what else it could be.
Dec 13, 2009 at 1:09 PM
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MICKEY-D
  • ✓ASE Certified Mechanic
  • 304 POSTS
  • ASE Certified Mechanic
Try the TPS(throttle position sensor),also check the EGR valve for vacuum at the wrong time.( Pull off and plug the vac line)drive the car, if it is the same, hook the line back up.
Dec 31, 2009 at 8:39 PM
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