1997 Chevrolet S-10 engine surge

1997 CHEVROLET S-10
267,000 MILES • 2.2L • 4 CYL • 2WD • MANUAL
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JKOCHAN19
  • MEMBER
  • 1 POST
I have replaced the tps the iac three times and tried to clean the throttle body and nothing has worked. When I start it up its a consistent up and down rpm between 1 and 1.5 and after about 5 to 10 minutes it starts to idle rough.
Oct 19, 2015 at 9:22 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
make sure to clean throttle plate on both sides as well as shaft. check for a vacuum leak also scan for codes and check fuel pressure with a gauge. the throttle body may be worn out due to mileage.
Oct 19, 2015 at 11:47 PM
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