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Lacks power, acts like it isnt getting enough fuel

Tiny
CSA1
  • MEMBER
  • 1994 CHEVROLET SILVERADO
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 257,000 MILES
Truck runs like crap. Acts like it isnt getting enough fuel to throttle body. Engine only has 14.000 miles on it. Have replaced fuel pump, ignition module, has a fairly new throttle body, just replaced TPS & MAP & EGR
fuel filter was changed when pump was, ( bout 6 months ago)
It will drive down road & act fine for a little bit, then it loses power, but sometime you can stomp the gas 7 it acts fine again for a little while. Has me stumped. We pulled the codes on it, showed 44 ( lean mixture on O2 sensor) Only thing I havent changed is the EGR solenoid & idle air. Any suggestions?
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Wednesday, November 11th, 2015 AT 2:04 PM

3 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
C
Plugged cat is my guess
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Wednesday, November 11th, 2015 AT 7:35 PM
Tiny
CSA1
  • MEMBER
  • 78 POSTS
Cat was removed a couple years back
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Wednesday, November 11th, 2015 AT 11:19 PM
Tiny
CSA1
  • MEMBER
  • 78 POSTS
Found the problem. Injector on left side, facing engine in throttle body was not spraying. Wiggled it & it started spraying again, going to go get a new connector, as think that one has a short in it
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Friday, November 13th, 2015 AT 10:06 AM

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