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Ford 83-94 6.9 and 7.3L General Discussion of 83-94 6.9 and 7.3 Liter Ford Diesels

tachometer

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Old 09-22-2014, 06:45 PM
horsehead's Avatar
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Default tachometer
1992 f250 7.3 ford diesel tachometer registering zero. will this affect/harm the motor and or transmission
 
Last edited by horsehead; 09-22-2014 at 06:56 PM. Reason: incorrect question
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Old 09-23-2014, 02:02 PM
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Welcome to the site.
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Old 09-30-2014, 11:23 PM
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It will not affect the motor, but it can affect the transmission if you happen to have the 4spd automatic, E4OD I believe. The E4OD uses the tach signal to shift gears. If you have the older C6 or any manual transmission, you won't have any issues.
 
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