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1999 Chevrolet Express 3500 5.7L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy
Posted to GM Driveability on 4/13/2006 10 Replies

after these repairs, no codes came back and vehicle had lots of power, ran well for 3 days, returned with no power and a code for bank 1 sensor 1 not switching, hooked up scanner ,vehicle immediately started running well, road tested, still running well, no co...

10 Replies Received (View Replies)

  Related Documents & Media  1999 Chevrolet Express 3500

 
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Express 3500

VIN 1GTHG39R8X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy
OccursIntermittently

Trouble Codes

P0102Mass Airflow Sensor Circuit Low Voltage
P0123Throttle Position Sensor Circuit High Voltage
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0161Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction
P1121TP Sensor Signal Lower Than Expected
PP034cam sensor problem
Message Closed w/FIX

car Vehicle Data

1999 Chevrolet Express 3500

VIN 1GTHG39R8X
Engine5.7 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy
OccursIntermittently

Trouble Codes

P0102Mass Airflow Sensor Circuit Low Voltage
P0123Throttle Position Sensor Circuit High Voltage
P0141Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction
P0161Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction
P1121TP Sensor Signal Lower Than Expected
PP034cam sensor problem