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Vehicle not running smooth

Tiny
HAPPYTRAILZ
  • MEMBER
  • 1994 CHEVROLET SUBURBAN
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
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?
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Saturday, July 2nd, 2011 AT 2:26 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 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?
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Tuesday, August 2nd, 2011 AT 8:37 PM

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