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1991 Chevy Cheyenne backfire when engine is warm

Tiny
DAMMTRUCK
  • MEMBER
  • 1991 CHEVROLET CHEYENNE
  • 6 CYL
  • 2WD
  • MANUAL
  • 150,000 MILES
Truck runs good when its cool but gets worse the longer I drive it to the point it seems like it runs out of gas. Have replaced fule pump, fule filter, spark plugs, plug wires, distributer shaft and every thing up from there to the plugs and the coil and idel control. Also replaced the intake gasket and catalytic converter.
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Wednesday, May 26th, 2010 AT 6:54 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Test the throttle position and manifold absolute pressure sensors.
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Wednesday, May 26th, 2010 AT 7:00 PM
Tiny
DAMMTRUCK
  • MEMBER
  • 2 POSTS
Thanks for the help. Where are the throttle position and absolute pressure sensors located?
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Thursday, May 27th, 2010 AT 8:22 PM

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