1995 Chevy S-10

1995 CHEVROLET S-10
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JIMIJAKE
  • MEMBER
  • 1 POST
Transmission problem
1995 Chevy S-10 6 cyl Four Wheel Drive Automatic 180k miles

when I start the truck it feels extremely rough idling in park and even more so in revers but once it's in drive it runs fine. I haven't driven it since this started because I don't want to make it worse. if feels very shaky and rough right in the drivers seat so I assumed it's the transmission but if thats the case then I don't know why it's doing it in park aswell. any information on why this might be happening and some solutions to fix it would be greatly appreciated.
Nov 14, 2008 at 2:48 PM
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SWILLIAMS
  • ✓ASE Certified Mechanic
  • 597 POSTS
  • ASE Certified Mechanic
Check the EGR valve. The early units tend to get stuck open with a small chunk of carbon. Causes a very rough idle and once your above 10-15 mph it clears up.
Nov 14, 2008 at 9:49 PM
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