
1995 GMC G3500 Vandura 5.7L Excessive Emissions, Poor Idle Quality, Stall, MIL Lamp on
we have discovered that we have 4.12 v at idle to map sensor, but we have a pulsing vacuum it seems like, can apply vac with guage and volts drop to normal but runs bad. we have no vac. to baro sensor from throttle body, is that the prob? putting new gaskets o...
FIX posted 1/26/2005
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Message Closed w/FIX
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VIN | 1GTFG35K2S |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / tbi |
Emissions | Not OBD-II Compliant |
Symptoms | Excessive Emissions, Poor Idle Quality, Stall, MIL Lamp On |
Occurs | Always |
Trouble Codes
34 | map high voltage |
Message Closed w/FIX
Vehicle Data
1995 GMC G3500 Vandura
VIN | 1GTFG35K2S |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / tbi |
Emissions | Not OBD-II Compliant |
Symptoms | Excessive Emissions, Poor Idle Quality, Stall, MIL Lamp On |
Occurs | Always |
Trouble Codes
34 | map high voltage |