E4OD Shifted into Reverse Going Forward
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New User
Joined: Apr 2017
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From: Summit County Colorado
E4OD Shifted into Reverse Going Forward
I was trying to merge into traffic coming off of jeep road at the top of a mountain pass in Colorado while in first gear and a car immediatey got on my tail so I tried to throw it into drive. I overshot drive went past neutral and hit reverse. Since I was in first gear I don't think I was going any more than 10 to 15 miles per hour at the time. The truck immediately shuddered and I heard a chirp and threw it back into forward gear. The engine did not stall. I have an e4od the vehicle has 170,000 miles on it and the transmission was rebuilt with a double plate Billet torque converter 5000 miles ago with a Transgo Tugger shift kit. I drove to a large parking lot and tested driving backwards in reverse and it seemed fine. The forward gear seem fine over the 10 miles to the parking lot. I checked for any evidence of transmission fluid leaks and did not see any. I researched the subject on the internet and found out that some transmissions have a reverse inhibitor. If the e4od has a reverse inhibitor it didn't work in this situation. I would like to know what if any problems could occurr from this brief mistake.
Thanks,
Steve
Thanks,
Steve
Last edited by Summit CO RV'R; Aug 12, 2021 at 12:01 AM. Reason: Clarity
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,695
Likes: 2,616
From: SE Florida
There is no reverse inhibitor. I have personally tested E4ODs for this very mistake. I have put an E4OD in reverse at 80 MPH. Don't try this at home! I was a professional on a closed test track. There was no damage to anything, the engine just stalled.
I am confident that there is no damage to your transmission.
I am confident that there is no damage to your transmission.
Laughing Gas
Joined: Oct 2019
Posts: 949
Likes: 109
From: Fowler Colorado
There is no reverse inhibitor. I have personally tested E4ODs for this very mistake. I have put an E4OD in reverse at 80 MPH. Don't try this at home! I was a professional on a closed test track. There was no damage to anything, the engine just stalled.
I am confident that there is no damage to your transmission.
I am confident that there is no damage to your transmission.
Thread Starter
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New User
Joined: Apr 2017
Posts: 9
Likes: 0
From: Summit County Colorado
There is no reverse inhibitor. I have personally tested E4ODs for this very mistake. I have put an E4OD in reverse at 80 MPH. Don't try this at home! I was a professional on a closed test track. There was no damage to anything, the engine just stalled.
I am confident that there is no damage to your transmission.
I am confident that there is no damage to your transmission.
Mark thanks for your reply! I will sleep better tonight knowing I most likely dodged that bullet.
My transmission shop told me I would be lucky if no damage occurred. My regular local shop thought maybe my rear wheels locked up briefly but never turned in reverse.
I went back to the spot this happened and found 2 skid marks: one 8' and the other 10' long. If I was going 10 Mph the skid distance suggests I was in reverse about 0.07 seconds.
Both shops suggested driving the truck and watching for problems. I was thinking I should stress test it before taking any long trips. Then have the fluid and filter changed looking closely for any metal residue.
Last edited by Summit CO RV'R; Aug 12, 2021 at 11:56 PM. Reason: Spelling
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