1995 GMC C1500 Sputtering

1995 GMC C1500
146,000 MILES • V8 • 2WD • AUTOMATIC
Avatar
BARW697
  • MEMBER
  • 1 POST
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
Sep 29, 2009 at 9:50 AM
Advertisement
Avatar
RACEFAN966
  • ✓ASE Certified Mechanic
  • 5,029 POSTS
  • ASE Certified Mechanic
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
Sep 29, 2009 at 10:35 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
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.