
1999 Chevrolet Express 3500 5.7L Hesitation, MIL Lamp on, BACKFIRES INTAKE
new tech getting old techs x's on acc van falls on its face the hotter it get the worse it gets but does it all the time but once it gets up to speed it runs good it also back fires through intake when acc fuel press good all the time and getting o2s down in t...
FIX posted 7/30/2004
![]()
iATN Members:
Login to view full TechHelp request Auto Repair Pros: Join iATN to read this TechHelp request Vehicle Owners: Find a nearby iATN member to repair your vehicle (View Replies)12 Replies Received(Hide Replies)12 Replies Received
|
Message Closed w/FIX
|
VIN | 1GAHGS9R2X |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, MIL Lamp on, Backfires Intake |
Occurs | Always, Under Load, on Accel |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
P0151 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage |
P0157 | Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage |
P0730 | Automatic Transaxle Shift Control System |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet Express 3500
VIN | 1GAHGS9R2X |
Engine | 5.7 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Hesitation, MIL Lamp on, Backfires Intake |
Occurs | Always, Under Load, on Accel |
Trouble Codes
P0131 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit Low Voltage |
P0137 | Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit Low Voltage |
P0151 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit Low Voltage |
P0157 | Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit Low Voltage |
P0730 | Automatic Transaxle Shift Control System |