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Tachometer inaccurate and little info
The tachometer is increasingly inaccurate as engine speed increases, until it is about 700 RPM over the RPM PID. It seems that this must be a tacho fault, but Ford didn't include much info on this. What I would really like to know is the correlation of the dig... Login to read more. 
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| Engine | 7.3 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1997 Ford F-250 HD XL 7.3L
| Engine | 7.3 L |
| Trans | 4-speed Automatic (Electronic) |
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