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1995 GMC C1500 Sputtering

Tiny
BARW697
  • MEMBER
  • 1995 GMC C1500
  • V8
  • 2WD
  • AUTOMATIC
  • 146,000 MILES
On my pick up, it wants to bog down and sputter whenever I decelerate. It only does it after it has warmed up. When I first start it, it runs fine until it warms up some. I have replaced the plugs and wires, air filter and pcv valve. Can you give me any more suggestions?

Thanks
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Tuesday, September 29th, 2009 AT 9:50 AM

1 Reply

Tiny
RACEFAN966
  • MECHANIC
  • 5,029 POSTS
Ok if you would find the temp sensor on or near the thermostat. It will have a two wire connector to it. Now unplug it and use a digital mutli meter and ohm the sensor (not the wire harness). If you do this when it is cold then get me the reading and the air temp at the time. If you do this warm then get me the reading and the engine temp at the time. Get back to me. Thanks
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Tuesday, September 29th, 2009 AT 10:35 AM

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