Question about 2004 Ford F150
My 2004 f150 speedometer now rests at the 120 mph.
When I come to a stop it moves to abouyt 70 mph.
Then as i drive it moves to 120 and dances.
What can i do to fix
Replace speed sensor
Posted on Jul 10, 2008
Some 2004 ford trucks have a problem with the wiring harness used for cruise control runs too close to the alternator causing EMI. At a stand still it will look as though you are going 30 mph. If your alt is putting out an exessive amount of current, this will cause the dash module to become overwhelmed with the EMI and eventually fail.
Posted on Jul 05, 2008
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Posted on Jan 02, 2017
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