92 S10 RUNNING RICH

  • Tiny
  • TDTHOMPSON
  • 1992 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 206,000 MILES

92 S10 4X4 4.3L RUNS RICH (BLACK SMOKE) COOLANT SENSOR READS PROPER AS PER THREMOTER THE TPS AT IDLE SHOWS.46V THE MAP IS AT 4.95 V KOEO AND 2.34 @IDLE THE HO2S IS AT.467V KOEO AND.867-.980V IDLE
IS IT POSSIBLE THAT THE FUEL PRESSURE REG IS STUCK SHUT OR INJECTOR THAT BAD
OR IS A ECM NOT RESPONDING CORRECTLY?

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Monday, August 8th, 2011 AT 1:22 AM

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  • Tiny
  • Saturntech9
  • EXPERT
  • 30,231 POSTS

The map sensor is at 4.95 volts at idle?If that is way off.

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Monday, August 8th, 2011 AT 1:37 AM
  • Tiny
  • Saturntech9
  • EXPERT
  • 30,231 POSTS

Have you checked for codes?

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Monday, August 8th, 2011 AT 1:40 AM

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