Speedometer Problem


Old 03-02-04, 09:42 AM
thiggy's Avatar
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Join Date: May 2002
Location: Alabama
Posts: 718
Question Speedometer Problem

The speedo in my '92 Ford Escort (no barbs, please) has for a while been reading about 15 MPH faster than actual at hiway speeds. The needle doesn't jerk as when a cable needs lubrication, but operates smoothly. No work has been done to the speedometer, the cable or transmission. The tires are original size. Does anyone have any suggestion about what may be causing this problem?
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Old 03-02-04, 02:34 PM
Join Date: Jun 2002
Location: Long Island, NY
Posts: 1,531
I have seen the speedo adapter seal leak and the trans oil will be pulled right up the cable to the speedo head. The oil causes the speedo head to work incorrectly (reading too fast). Effectively ruining the speedo head.

Reach up behind the dash and see if the cable where it attaches to the speedo is wet with oil.

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