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Discussion Starter · #1 ·
I have a 96 OBS with the wonderful E4OD tranny. I am having two problems; :confused:

As the truck shifts from 2 to 3 , it seems like it half shifts and then hits third. The truck still feels like its in a gear (cant tell if the clutches are slipping) in the half shift... any thoughts?

From what Ive read this tranny has a "limp" mode. I have had times when my tranny goes into limp but I dont get any codes. The shift points drop way low and it just bogs, but never left me stranded. Now it is popping out of gear after going 60 mph for a while, but then if I shift it to neutral and back to drive a couple times it drops back in.

I bought the truck used but I'm not sure if its the original tranny. The torque converter did not have the drain plug and looked fresh. 175K on the truck. I changed the fluid and I figured it will get better or worse, but nothing changed with the issues I've been having. I did notice the shifter/electrical connector at the tyranny was recently replaced. Probably not OEM.

Thanks in advance for the help!
 

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Discussion Starter · #6 ·
More info

Today she slipped out of overdrive and into what seemed like a slipping 3rd. The o/d light sometimes comes on and sometimes does not. A couple drops into neutral and she drops back into O/D. There have been times when shes drops totally out of gear, I have pulled over, shut down the truck, and unplugged the connector at the shift linkage and plugged it back in and shes fine. I have totally cleaned the connector, so it should be making good contact. I also noticed my speedo bouncing a fine amount, maybe a couple miles an hour. I cant imagine that would be enough to cause this. My big concern id for my rear diff. She shifts hard a lot.

I Have a few other things that may be part of the problem. don't know.

I have noticed that on the cold mornings now I don't get a wait to start light. I already disconnected the fuel bowl heater and my fuse is good. Once it warms up the wait to start light starts working. PCM?

Uggh........
 

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Discussion Starter · #11 ·
She always seems to act up when just crusing. About the neutral safty switch; when i bought the truck, took it for a test drive and as i remember it seems like it shifted much better. Then tbe guy called me am said the truck wouldn't start and needed a starter solinoid. The solinoid is original on the truck, not sure why he lied. I did notice that the neutral safety had been changed. Probably some junk from autozone or similar. Now my no start has disappeared. It will come on once i go to fire it after its warm. I have gone through and disconnected the fuel heater. No blown fuses.

I also found that, if she starts limping or slipz out of gear, i can pull over shut it down, unplug the connector at the neutral safety switch and plug it back it, the truck will shift fine. I have cleaned the plug and checked the pins.

Hopefully this gets me closer to a fix. Thanks guys!
 

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Discussion Starter · #15 ·
Sorry but im going to bump this, money is tight and i just started a company. Im new to diesel too, but wish i would have not wasted so much of my life on gassers. I know e4od problems are all over the map but anyone have any thoughts on where i should start. I hate to just throw a tranny in if mines fine. It seems like electrical, but im not sure where to even start .

Thanks. :D
 
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