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1991 Ford F-150 Custom 5.0L MIL Lamp on, lack of power
Hi Guys This truck came in a couple months ago with a complaint of loss of power going over mountains and poor trailer pulling power (3500 Lb. boat trailer) and an intermittant MIL. We found code 334 (EGR) and 172 (O2 lean) and concluded the EGR was ha...
FIX posted 5/1/2000
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| VIN | 1FTDF15N3M |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | MIL Lamp on, Lack of Power |
| Occurs | Intermittently |
Trouble Codes
| 172 | O2 lean |
| 334 | EGR base voltage too high |
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Vehicle Data
1991 Ford F-150 Custom
| VIN | 1FTDF15N3M |
| Engine | 5.0 L / 8 cyl / GAS |
| Trans | 4-speed Automatic |
| Delivery | FI |
| Symptoms | MIL Lamp on, Lack of Power |
| Occurs | Intermittently |
Trouble Codes
| 172 | O2 lean |
| 334 | EGR base voltage too high |
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