E4OD shifting question
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Elder User
Joined: Mar 2012
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From: Quaker Hill
E4OD shifting question
I have 2 trucks being combined into 1. The good truck has a blown tranny. The donor truck has a tranny that takes 3-4 seconds to shift into drive or reverse. It has 130 k on it. After it shifts, it does just fine; no slipping, and fluid smells fine. I'm hoping its something as simple as a shift solenoid that can be replaced. How realistic is this, and how accessible is this part with the pan off? I'd like to repair the one I have instead of buying a junkyard one. Also, if it is a shift solenoid that's sticky, would it be a bad plan to pull the one from the blown tranny to use? I'm not sure if they are something that usually gets ruined when the tranny goes, or if they can be reused? Any help is greatly appreciated!
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
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From: SE Florida
There are no shift solenoids used to make the reverse or drive engagements. The only solenoid that is used is the EPC (electronic pressure control) solenoid. If it has low pressure it could make delayed engagements, but then all the shifts would be slow and soft, too.
Senior User
Joined: May 2010
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From: Atlanta, GA
My truck kinda does that. Go into drive, wait one second lurches... But you can hit the accelerator before you feel the lurch and it goes vroom just fine. Same deal with reverse... Shifts fine, doesn't slip... Acts like a typical E4OD factory tranny... That's why I'm having a BTS built lol
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Elder User
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From: Quaker Hill
Mark, in your opinion, is there something simple and fairly inexpensive that could be done to this trans to make the 1st and reverse gears engage in a more timely manner, or would I be better off to buy a used trans from a salvage yard for $600? I know that it's difficult for you to give a conclusive verdict since you are not here in person. There were no codes when I scanned the vehicle with AE and the OD light wasn't flashing. Other than taking 3-4 seconds to engage after shifting into gear, the truck drove as smooth as could be. It was only noticeable when plowing snow. Thank you!
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
I wouldn't expect a used transmission to be any better than what you have. A BTS May not be any better, either.
You might have a low pressure condition. That could be a bad EPC solenoid, or worn seals or a worn pump. Get a 0-350 psi gauge and check line pressure.
You might have a low pressure condition. That could be a bad EPC solenoid, or worn seals or a worn pump. Get a 0-350 psi gauge and check line pressure.
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