2002 Chevrolet Tracker Engine Runs Great Speed Cold Also Park Neutral Hot Drive

2002 CHEVROLET TRACKER
98,000 MILES
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ROWLPAR
  • MEMBER
  • 2 POSTS
The engine runs great at speed or when cold. It also runs great in park or neutral when hot or cold. When hot and in drive it idles very rough especially when an electrical load is added to the idling engine. A slight touch on the accelerator smooths it out. What are the possible causes and what is the fix?
Mar 17, 2013 at 9:10 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
vacuum leaks. have it checked to see if any hoses are broken or off.

the throttle body could be the issue as well.

Roy
Mar 17, 2013 at 9:13 AM
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ROWLPAR
  • MEMBER
  • 2 POSTS
Thanks Roy. I have checked for vacuum leaks and even sprayed ether in the engine compartment, no increase in RPMs. What should I look for in the throttle body?
Mar 22, 2013 at 9:50 PM
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