1990 S10

1989 CHEVROLET S-10
179,000 MILES • 4 CYL • 2WD • MANUAL
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KOLBY1185
  • MEMBER
  • 2 POSTS
skipping and backfireing when going one speed changed map egr vacuum control tbi gasket i can unplug map and runs good but uses alot of gas wat could my problem be
Dec 18, 2010 at 5:21 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Run a live analysis on the computer and the MAP sensor to make sure it is functioning within spec. Something tells me you have a wiring issue or another bad sensor. If all is good, check compression to make sure you don't have a burnt valve or low compression.
Jan 10, 2011 at 3:07 PM
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