Desert Shield/Storm Vet
Join Date: Dec 2006
Location: Munising, MI.
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This is what I have found on the net. Not sure of the validity of it, but mine doesn't move either.
2002 or newer truck, the "No TACH Movement During Cranking" troubleshooting trick
probably wont work for you. Ford changed how the TACH gets its signal to a computer controller
and so it does not move AT ALL until the truck is fully running. However, if the truck was
running and the TACH falls to zero, start looking into the CPS.
2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting