Join Date: Jan 2003
Location: Neepawa, Manitoba Canada
Feedback Score: 0 reviews
Re: 1994 F250 transmission problem - hard shift
There are three inputs that are required to operate the trans.. tach, speedo and Fuel injection pump lever (FIPL).
Does the tach work, how about the speedo, then the FIPL it's on the LH side of the IP.
To set to specs:
With a warm engine and the idle speed set to your engine specs probably 650 in drive (curb idle).
Now with key on engine off. First connect the negative lead of a volt meter to the negative battery post, then place a paper clip straightened to slide up the side of the center wire for a good contact, touch the positive lead to the paper clip. Electrical connector must be connected to the FIPL.
If your FIPL requires resetting loosen the small torx screws and attempt to attain the correct setting. You can loosen the large bolts on the bracket if necessary but try to retain the centering on the FIPL/blade.
Your trying to get closed throttle voltage: 1.1 V, wide open throttle voltage: minimum of 3.8 V but not more than 4.3 V.
If you can attain those #s then tighten the screws/bolts and ensure the voltage is at the correct setting after tightening. You can also do a slow sweep of the fuel lever from idle to WOT to see if there are any blanc (dead) spots, much easier with a really $$$ meter with capture mode. If you still find there are hard shifts or very soft slippery shifts you can adjust to suit your driving but be warned slippery shifts will burn the trans up.
Just some helpful info......
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93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93
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