|
1999 Chevrolet K2500 Suburban 7.4L Misfire, MIL Lamp on, rich exh.
At idle and down the road reads missfires but doesn't set any codes. Hook on to a heavy load like a boat sets random missfire code and 2 rich exhaust codes. Pulled rear O2 sensors and they both read and look fine. Fuel pump sine wave even looked good.
FIX posted 5/10/2003
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 19 Replies Received (View Replies)19 Replies Received (Hide Replies)
|
Message Closed w/FIX
|
19 Replies Received
19 Replies Received
Related Documents & Media | VIN | [No VIN Available] |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp on, Rich Exh. |
| Occurs | Under Load |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0175 | Fuel System Too Lean (Bank 2) |
Message Closed w/FIX
Vehicle Data
1999 Chevrolet K2500 Suburban
| VIN | [No VIN Available] |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Misfire, MIL Lamp on, Rich Exh. |
| Occurs | Under Load |
Trouble Codes
| P0172 | Fuel System Too Rich (Bank 1) |
| P0175 | Fuel System Too Lean (Bank 2) |
Video