Vehicle not running smooth

1994 CHEVROLET SUBURBAN
200,000 MILES • V8 • 2WD • AUTOMATIC
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HAPPYTRAILZ
  • MEMBER
  • 1 POST
What's wrong with my Chevy Suburban? Acts like it's skipping...hesitates...not taking gas...you give it the gas and it bogs down...when you sit still, it cuts off...just runs awful!!! Have replaced distributer cap, rotary button, spark plug wires, plugs,check engine light came on-code said to replace oxygen sensor-replaced that and replaced in-line fuel filter. What could it be?
Jul 2, 2011 at 2:26 AM
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JDL
  • CAR REPAIR CONTRIBUTOR
  • 16,098 POSTS
Use a gage and check fuel pressure. Look at the o2 sensor signal, should tell you if system is running rich or lean. The code doesn't tell you what to replace, only that the computer thinks there is a problem on that system. Are you TBI or mfi?
Aug 2, 2011 at 8:37 PM
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