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1997 Pontiac Bonneville SE 3.8L Hesitation, MIL Lamp on
When starting this engine the MIL light will set a PO121 code every time after cooling down. The TPS has been replaced and the circuit checks normal with .47v at rest and maxs at 4.7 v. The circuit graphs perfectly. I can erase the code and drive the car and i...
FIX posted 7/18/2002
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Message Closed
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Related Documents & Media | VIN | 1G2HX52K8V |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, MIL Lamp On |
| Occurs | Hot, Under Load, Intermittently |
Trouble Codes
| P0121 | Throttle Position Sensor Range/Performance |
| P0171 | Fuel System Too Lean (Bank 1) |
Message Closed
Vehicle Data
1997 Pontiac Bonneville SE
| VIN | 1G2HX52K8V |
| Engine | 3.8 L / 6 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI |
| Emissions | OBD-II Compliant |
| Symptoms | Hesitation, MIL Lamp On |
| Occurs | Hot, Under Load, Intermittently |
Trouble Codes
| P0121 | Throttle Position Sensor Range/Performance |
| P0171 | Fuel System Too Lean (Bank 1) |
Video