E4OD problems
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Junior User
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E4OD problems
Our 95 F-350 7.3PS car hauler has an E40D in it, but when it has a load on it, It will usually miss 2nd gear and sit at the limiter for a while until it goes directly into 3rd along with TC lockup. We rebuilt the trans over the winter and replaced all clutches and bands, along with a shift kit. It works okay when there is no load on it but will not hold with a load. We load dads truck on the bed and tow mine on a trailer, so thats around 11-12,000# to tow. We took it to a trans shop today and he couldn't find anything electrically wrong. He thought maybe a sticking accumulator valve. Any other Ideas??
Lead Driver
Joined: Nov 2003
Posts: 6,900
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From: Campbell River, B.C.
It almost sounds to me like a servo or band failure.
Will it go into 2nd gear with the truck empty? or strictly in drive?
Can you think anything else that it has been doing that was not quite right?
Was there any warning before it got this bad?
BTW, I like the sig, thats my all time favorite line of truck.
Will it go into 2nd gear with the truck empty? or strictly in drive?
Can you think anything else that it has been doing that was not quite right?
Was there any warning before it got this bad?
BTW, I like the sig, thats my all time favorite line of truck.
Posting Guru
Joined: Jul 2003
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The only time the intermediate servo is used is when the shifter is in 2. When it's in D only the intermediate clutch is used for second gear, so it certainly isn't the servo or band.
I suspect it's the intermediate one way clutch.
I suspect it's the intermediate one way clutch.
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It will go into second when its empty. It did not go in 2nd manually either witha a load. We didn't try it manually unloaded. It also acted up with the lighter of the two trucks on it(3800#) when going to the tranny place.
Mountain Pass
Joined: Jun 2004
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From: Canada
If this has been doing this since the overhaul, is it possible the intermediate one way clutch is reversed? I'm not sure this is even possible, but your problem sounds in this area. Did the trans shop check to see if the processor is commanding second gear? Out in the shop I have the logic for the shift solnoids, I will post later. Don
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Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Originally Posted by Don Senkow
If this has been doing this since the overhaul, is it possible the intermediate one way clutch is reversed? I'm not sure this is even possible, but your problem sounds in this area. Did the trans shop check to see if the processor is commanding second gear? Out in the shop I have the logic for the shift solnoids, I will post later. Don
My update book mentions that it is possible for the low roller clutch to be installed incorrectly, but I don't know if this can apply to the intermediate one way clutch.
Have you had a chance to check your fluid or pan magnet yet?
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Mountain Pass
Joined: Jun 2004
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From: Canada
Here is the solnoid logic for OD with cancel switch off.
1st Sol 1 on Sol2 off
2cd Sol 1 on Sol2 on
3rd Sol 1 off Sol2 on
4th Sol 1 off Sol 2 off
The processor uses these 2 solnoids to command the valve body. This will allow you to determine whether your problem is internal or not. Don
1st Sol 1 on Sol2 off
2cd Sol 1 on Sol2 on
3rd Sol 1 off Sol2 on
4th Sol 1 off Sol 2 off
The processor uses these 2 solnoids to command the valve body. This will allow you to determine whether your problem is internal or not. Don
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It did this before the rebuild. Thats why we rebuilt it but obviously didn't find the problem. The trans shop was having a hard time because there is not very much of a datastream coming off of it. I hooked the scanner to it at our shop, and it hardly showed anything
I'll have to do some testing on it myself I guess. I haven't really had any part in it other than seeing if anybody else has had a problem like this
I'll have to do some testing on it myself I guess. I haven't really had any part in it other than seeing if anybody else has had a problem like this
Lead Driver
Joined: Nov 2003
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From: Campbell River, B.C.
Originally Posted by Fordguy545
It did this before the rebuild. Thats why we rebuilt it but obviously didn't find the problem. The trans shop was having a hard time because there is not very much of a datastream coming off of it. I hooked the scanner to it at our shop, and it hardly showed anything I'll have to do some testing on it myself I guess. I haven't really had any part in it other than seeing if anybody else has had a problem like this
I'll have to do some testing on it myself I guess. I haven't really had any part in it other than seeing if anybody else has had a problem like thisI also heard from a transmission builder that a groung strap for the transmission can prevent some electrical problems.