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1996 Chevrolet C1500 Cheyenne 5.0L Excessive Emissions, Hesitation
Posted to GM Driveability on 5/7/2008 7 Replies

This truck came in with symptoms of intermittent run rough, idles low and almost stalls. Sometimes doesn't happen a few days in-between. Customer says problem only lasts a few seconds.

Of course I can't get any of the symptoms to occur. The tps sweeps good a...

7 Replies Received (View Replies)

  Related Documents & Media  1996 Chevrolet C1500 Cheyenne

 
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet C1500 Cheyenne

VIN 2GCEC19M7T
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Hesitation
OccursIntermittently

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P0172Fuel System Too Rich (Bank 1)
P0175Fuel System Too Lean (Bank 2)
P0748Pressure Control Solenoid Circuit Malfunction
P1122TP Sensor Signal Higher Than Expected
P1406EGR Valve Pintle Position Circuit Malfunction
Message Closed w/Summary

car Vehicle Data

1996 Chevrolet C1500 Cheyenne

VIN 2GCEC19M7T
Engine5.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Hesitation
OccursIntermittently

Trouble Codes

P0122Throttle Position Sensor Circuit Low Voltage
P0172Fuel System Too Rich (Bank 1)
P0175Fuel System Too Lean (Bank 2)
P0748Pressure Control Solenoid Circuit Malfunction
P1122TP Sensor Signal Higher Than Expected
P1406EGR Valve Pintle Position Circuit Malfunction