My E4OD has some issues in 4th gear.

It changes normally from 1st to 2nd and 3rd, but goes directly into overdrive instead of 4th.

If I lightly press the brake it changes down to 4th, but jumps right up again when brake is released.

During winter time and the car is freezing cold it runs in 4th until transmission heats up, then skips into overdrive.

The biggest problem really is, when driving in the speed range where the 4th gear should have been. Instead it runs in 3rd in that range with high rpms. The noise in that range is unbearable specially since that's the speed limit on the highway in my area (60 - 70 km/h).
After 40 minutes in that range i'm about to lose my head

It goes into 3rd gear at 50 km/h, and overdrive at 72 km/h.
I think 4th should have been at 60 km/h. ???

Are there any adjustments that can be done? The transmission was overhauled 3 years ago (60,000.00 km) and it has been a problem since then.

 

There is only 4 gears. Did you have a new converter put in when the work was done? Are your brake/tail lights all working?

 

I changed your words to more accurately describe what's happening. Where you are saying overdrive, that's really the torque converter locking. Your transmission only has four gears including overdrive. Fourth gear has a ratio of 0.71:1, which is an overdrive ratio.

All the issues you have here are normal operation for an E4OD. The programming in the software is the culprit. It's not very good. The ONLY way to make adjustments to fix this is with an aftermarket chip. I don't have any recommendations as to which one.

 

Thank you for clearing that out. I always meant the E4OD had 4 gears including the overdrive, but when counting during take-off I counted 4 pluss overdrive.

I have a aftermarket chip of some sort, don't know the makers name or nothing on that. Also the previous owner doesn't know anything.
All I can see is that someone has opened and sealed IDM with something black and sticky mess.

Would purchasing a brand new IDM programmed for my E-350 van solve the problem??

 

Yeah many people say that.

IIRC its cuz it goes
1st to 2nd.
2nd - TC lock
3rd - TC lock
then 4th and finally when it locks in 4th.

Not sure entirely, but thats how it went through my head atm.

 

That's crazy. I didn't know it did that. I always wondered why it seemed like it was shifting an awful lot...guess it is the TC locking and unlocking now that I read this. I personally don't like the way the e4od shifts. Especially on this hilly, curvy country roads we have here in WV. Might be alright in some places that are flatter and straighter, but doesn't seem good here. For example, when I'm driving to Bill's, the trans is constantly shifting like it doesn't know what to do. Turning the OD off helps, but I guess it must still be locking and unlocking the TC, cause it's still back and forth constantly. My other e40d in my ECLB (Before I swapped to zf5) did the same thing, but every time I went to Bill's it threw a code in the same spot almost every time and went into limp mode. That was annoying.

 

No, it will not help. The IDM has nothing to do with the transmission operation. It only affects the engine.

 

If you have chip it will be in the PCM which is in the fire. If you do have a chip remove it and see how it does. You can remove the parking brake in the truck to see the back of the PCM to see if you have a chip.

 

On my E-350 I pulled the IDM behind the battery. Pulled it out this summer to check the serial numbers, and to make a rubber boot to cover it from rainwater dripping down on it.

Is the PCM and the IDM located in the same place?
When I pulled out the IDM this summer, there was nothing else in there with it.
Or do I have to remove the handbrake to see the PCM?

 

[QUOTE=tiopet;12410308]My E4OD has some issues in 4th gear.

It changes normally from 1st to 2nd and 3rd, but goes directly into overdrive instead of 4th.

If I lightly press the brake it changes down to 4th, but jumps right up again when brake is released.

During winter time and the car is freezing cold it runs in 4th until transmission heats up, then skips into overdrive.

The biggest problem really is, when driving in the speed range where the 4th gear should have been. Instead it runs in 3rd in that range with high rpms. The noise in that range is unbearable specially since that's the speed limit on the highway in my area (60 - 70 km/h).
After 40 minutes in that range i'm about to lose my head

It goes into 3rd gear at 50 km/h, and overdrive at 72 km/h.
I think 4th should have been at 60 km/h. ???

Are there any adjustments that can be done? The transmission was overhauled 3 years ago (60,000.00 km) and it has been a problem

An E40D transmission is a four-speed automatic electronically shifted hydroMatic transmission. Which mean when you pull it down to drive to takeoff forward it starts off in first gear then when it changes the first time it goes to second the second change would be the transmission going to third and the third change would be the transmission going to fourth a.k.a. overdrive. I’ve been building transmissions my whole lifeAnd it never seems to amaze me how many people don’t know that And it never seems to amaze me how many people don’t know that.

 

[QUOTE=Cheree Leddy;19139418]
The whole break thing when u lightly tap the brakes and it kinda down shifts is your lock up in your converter kicking out of engagement It’s supposed to help save on gas.

 

The lockup for converter does not come on until the transmission is hot there’s a temperature switch on it so after the transmission is heated well its been driven for a minute then around 50/55 mile an hour you can barely get the bright lights to come on and the lock up converter will kick in but only in fourth gear the lockout will not kick on in third or second.

 

You may not realize but that post is from 2012.