1997 Plymouth Voyager Speedometer

1997 PLYMOUTH VOYAGER
180,000 MILES • 6 CYL • FWD • AUTOMATIC
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TRGRIDER
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The speedometer is now reading 30 miles an hour when I start the vehicle, the alternator recently went out and replaced it and a new battery, when you shut the car off the speedo goes back to zero. It still moves when driving but appears to be 30 mph off.
Jan 1, 2010 at 1:57 PM
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DOCFIXIT
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Maybe faulty Vehicle Speed Sensor on transaxle is check engine light on? trans shifting no change?
Let me know
Thanks for donate
Jan 1, 2010 at 2:11 PM
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TRGRIDER
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The check engine light is not on nor does it come on during driving. The transmission shifts fine and the speedo works its just that its 30 miles an hour off. When you shut the key off it drops back to zero.
Jan 1, 2010 at 5:32 PM
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DOCFIXIT
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Then the speedo head is at fault or printed circuit board.
Jan 2, 2010 at 11:49 AM