
1999 Chevrolet Express 3500 5.7L Hesitation, MIL Lamp on
When this symptom does finally happen the O2 sensors drop to about 40 mv and there is no throttle [...] the long term fuel trim stays about [...] sensors seem in spec except the O2's. I would think the LT fuel trim would start to rise but it doesn'[...] ideas?...
FIX posted 6/30/2005
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Message Closed w/FIX
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VIN | 1GBJG31RXX |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, MIL Lamp On |
Occurs | Hot, on Accel, Intermittently |
Misc. | Cutaway |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0151 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Express 3500
VIN | 1GBJG31RXX |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, MIL Lamp On |
Occurs | Hot, on Accel, Intermittently |
Misc. | Cutaway |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0151 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage |