Sluggish

Tiny
FINO67
  • MEMBER
  • CHEVROLET S-10
1994 chevy s-10 pick up, 235,000 miles 4.3l

The symptom is as I drive the truck drives like it's starving for gas. It will hesitate while driving. The truck starts fine all the time. I did plugs and wires, I "cleaned"the cat converter. About 1 year ago I did a fuel pump for the 3rd time. The fuel filter has never been replaced. I did the fuel injection unit( I think it's the cpi unit) over 100,000 miles ago. There are NO codes. People have suggested o2 sensor or map sensor. Any ideas I want to keep the truck it's been great. It seemed to start on freeway driving at high speeds and I couldn't accelerate but it does it all the time now. Please help I need my truck back. :(
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Thursday, November 15th, 2007 AT 9:34 AM

1 Reply

Tiny
RASMATAZ
  • EXPERT
Check the fuel pressure and the throttle position sensor closed and wide open throttle voltages.

Do the other 2 -O2/MAP sensors. Try changing the fuel filter could be clogging up or whatever.
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Thursday, November 15th, 2007 AT 11:16 AM

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