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Hey guys,Really need your help.98 sable dohc 82,000miles I just bought as is.Speedo does not work and the trans shifts are all over the place.Replaced VSS and no change.Checked wire from computer to sensor itself and its good.With car running and up in the air in drive I got no voltage from PCM.I changed out the computer and had a Ford tech come out with all his gear,cool,and he downloaded the info from the old one to the new one so the PATS system would let the car start,which it did.NO change!!!I should be getting a signal from the PCM for volts to the Vss right?Havent checked it yet on the new used PCM but will.Anyone have any other ideas???fuses are good for dash.Can the dash itself cause a problem.??VSS the 3 I have all checked with in range and close to each other.PLZ help Thanks Allan
 

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Could possibly be the internal gear the vss mates with. There's a past thread on here somewhere with a fairly simple r&r tutorial.
 
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