1995 Yukon 5.7L tbi

Tiny
CASPERL
  • MEMBER
  • 1995 ALL OTHER MAKES ALL OTHER MODELS
My truck runs fine for about 2 min. Then starts loosing power and starts coughing threw the tbi.
also I checked the computer codes and it gave me codes 35 & 54
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Thursday, May 18th, 2006 AT 3:21 PM

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Tiny
LOSONE
  • MEMBER
The 94 and 95 codes are very hard to read without a scanner. They are called Simtec codes. Putting a jumper between the connector and counting flashes

My listing doesn't list a code 35 but it does list a 54 which is a fuel pump relay malfunction.

Normally a "spit back" through the throttle body means a lean condition

Please recheck the codes and get back to me
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Thursday, May 18th, 2006 AT 4:50 PM

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