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1991 Chevy Silverado

Tiny
DWOLFF76
  • MEMBER
  • 1991 CHEVROLET SILVERADO
Engine Performance problem
1991 Chevy Silverado V8 Four Wheel Drive Manual

this pk-up had electrical gremlins with fuel pump circut got pump working and ran good for 2 days. Then flooded out. You can look in TBI and see toooo much gas, TPS voltage checks out, but get generic code 22 low voltage from TPS can I check ECM what do you think. I'm stumped I also cleared codes started it and idled good for 1 minute then flooded again
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Saturday, March 27th, 2010 AT 7:54 PM

4 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Hi, thanks for the donation. How long since tune-up? What was the fuel pressure spec, 9--13 psi, TBI. If fuel pressure is too high, could cause an issue. When starting, if you floor the gas pedal, does it have any effect on the injector pulse?
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Sunday, March 28th, 2010 AT 11:10 AM
Tiny
DWOLFF76
  • MEMBER
  • 2 POSTS
Tune-up recent, I don't have access to pressure gage at this time, flooring gas pedal will sure encrease air and keep it running but still tooo much fuel it just barely pulls it's self down hill to garage smoking and coughing. Will try and get pressure gage and know more tomarrow. THANK YOU
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Sunday, March 28th, 2010 AT 9:14 PM
Tiny
2 LINSEY
  • MECHANIC
  • 287 POSTS
Any luck on finding a gauge?
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Wednesday, March 31st, 2010 AT 3:48 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Some of the national brand autostores used to loan out a fuel pressure gage, if you don't have one. It don't hurt, to call and ask?
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Wednesday, March 31st, 2010 AT 4:17 PM

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