1993 Chevrolet Silverado surges

1993 CHEVROLET SILVERADO
178,000 MILES • 5.7L • V8 • 2WD • AUTOMATIC
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ROBERT SIMAO
  • MEMBER
  • 1 POST
starts fine, but when it warms up it starts surging, ruff idle. and stalls. I replaced fuel pump and filter. theres no check engine light on when it starts running ruff.
May 22, 2015 at 1:49 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
try cleaning throttle plate on both sides and iac hole with choke cleaner.
May 22, 2015 at 3:00 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
if a tbi unit check for a blown gasket/ vacuum leak under tbi
May 22, 2015 at 3:01 AM
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