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1999 Chevrolet K2500 Suburban 7.4L MIL Lamp on
This one has me stumped. What's going on with this vehicle is its over calculating with it's MAF sensor. AT idle, the total fuel trims are -10 on bank 1 and -12 on bank 2. Under a load, they're -25 to -30. If I unplug the MAF sensor and reset the fuel trims, t...
FIX posted 11/20/2014
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Message Closed w/FIX
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21 Replies Received
21 Replies Received
Related Documents & Media | VIN | 3GNGK26JXX |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0102 | Mass Airflow Sensor Circuit Low Voltage |
| 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 | 3GNGK26JXX |
| Engine | 7.4 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Emissions | OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| P0102 | Mass Airflow Sensor Circuit Low Voltage |
| P0172 | Fuel System Too Rich (Bank 1) |
| P0175 | Fuel System Too Lean (Bank 2) |
Video