Question about 1996 Mercury Sable

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My spedometer will work when car first turns on for a maximum of 5 minutes, then the speed shown will rapidly drop and rise about 5mph of my actual speed, then will drop to about 0mph, then vary between 5-30 mph. My vehicle also has these mini stalls where it seems the car is not in gear and the rpm meter is showing about 5500rpm and the engine revs real loud. I had a diagnostic test ran and autozone told me it was the Speed sensor, so i changed the speed sensor located directly on the transmission, by front left tire under the hood. I drive a 1996 Mercury sable. I don't know what else to do, any assistance would be greatly appreciated.

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The speedometer cable gear that tells tranny how fast your going is wore

Posted on Sep 04, 2010

  • gavinlong45 Sep 04, 2010

    Would that cause my vehicle to stall, etc? And where would I look for one of those?

  • ricks auto tech Sep 04, 2010

    the speed sensor cannot read speedcaBLe so tanny doesnt know when to shifrt take old cable out and see if its wore


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