Question about 1987 Ford F 150

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Speedometer doesn't work after pulling dashboard apart

My son pulled the dash board apart on the 1987 ford f-150 & now the speedometer doesn't work

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Check behind the dash to see if the speedometer drive cable was reattached. (mechanical, not electronic drive)

Posted on Sep 23, 2009

Testimonial: "the speedometer is still attached via the cable"

  • drallim Sep 23, 2009

    Next check is to remove the cable from the speedometer and try to draw out the center cable (square ended). If it comes out with a frayed end, the cable has twisted in half (the other end must be disconnected at the transmission and the inner cable pulled out. The inner cable is replaceable as an aftermarket device--see your auto parts supplier. Before going to the trouble of feeding the replacement into the housing, make sure that the speedometer fitting will turn freely--a small screwdriver or the old cable inserted and twisted CCW (looking at the rear of the speedometer) will drive the needle upwards in proportion to the speed of turning. If it wont turn, the bearing in the speedometer has frozen--try some penetrating oil where the fitting enters the body of the meter. If that is ineffective, the speedometer needs to be replaced (wrecking yard?)



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