2001 Ford e350 Over Drive switch not working
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Joined: Aug 2018
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Anyone? Is there anyway to bypass the pcm and send a signal to the transmission manually? Maybe run a momentary switch inbetween the hot on the fuse box and the to the transmission where the pcm sends the signal?
I’m starting to believe it might be the PCM but again it’s almost impossible to find any good data on what voltages I should be seeing and all that.
I have no codes and nothing else seems to be affected.
Thanks again.
I’m starting to believe it might be the PCM but again it’s almost impossible to find any good data on what voltages I should be seeing and all that.
I have no codes and nothing else seems to be affected.
Thanks again.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
What signal are you trying to send to the transmission? It doesn't get a signal that OD is turned off. The PCM just turns the two shift solenoids on and off, which creates four gear ratios. SS1 on/SS2 off is first gear, both on is second gear, SS1 off/SS2 on is third gear, and both off is fourth gear. When you press the OD OFF button the PCM doesn't allow a shift to fourth gear by not turning off both solenoids.
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Thanks for clearing that up
Is there any way then to send a signal to the solenoid bypassing the pcm?
Basically all im asking is is there any way possible to mimic whatever the pcm is sending to the solenoid?
Thanks
Is there any way then to send a signal to the solenoid bypassing the pcm?
Basically all im asking is is there any way possible to mimic whatever the pcm is sending to the solenoid?
Thanks
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