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1994 Ford F-150 XL 5.0L MIL Lamp on
Hi all, this truck came in with the check engine lamp coming on. Retrieved codes 121 & 123 - unplugged TPS & hooked up a known good - same results - hooked up breakout box - checked VREF - 5.0v checked resistance from pin 47 (TP) to 26 (VREF) & 57 VPOWER -...
FIX posted 1/21/2000
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Message Closed w/FIX
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Related Documents & Media 
| VIN | 1FTEF15N0R |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / EFI |
| Emissions | Not OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 121 | high voltage from TPS |
| 123 | same |
Message Closed w/FIX
Vehicle Data
1994 Ford F-150 XL
| VIN | 1FTEF15N0R |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | FI / EFI |
| Emissions | Not OBD-II Compliant |
| Symptoms | MIL Lamp On |
| Occurs | Always |
Trouble Codes
| 121 | high voltage from TPS |
| 123 | same |
Video