Auto transmission slip
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Cross-Country
Joined: Jul 2003
Posts: 86
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From: Evans,GA
Auto transmission slip
Well my 91 ED04 finally started slipping (real bad). I had heard the stories. Anyway to adjust one of these? Or do I have to rebuild/replace. I read the post about the swap to a manual and I'm not doing all that! Does anybody build an auto that can handle the diesel?
Posting Guru
Joined: Oct 2003
Posts: 2,438
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From: Monroe, WA
Did it lock into second gear? It should be throwing all sorts of codes if it's really slipping. Find a good tranny shop and have them scan it for you.
Everyone claims they can build a bulletproof E4OD, but I haven't seen too many of them out there. There is a guy near me that runs a tranny shop that specializes in Allisons and he's built a couple ODs for us that haven't come back. His shop is called 'Powershifts' I think, he's in Woodinville, WA. Not sure where you are.
Everyone claims they can build a bulletproof E4OD, but I haven't seen too many of them out there. There is a guy near me that runs a tranny shop that specializes in Allisons and he's built a couple ODs for us that haven't come back. His shop is called 'Powershifts' I think, he's in Woodinville, WA. Not sure where you are.
Elder User
Joined: Oct 2002
Posts: 743
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There are a few places that claim to make bulletproof e40d's. I haven't personally had any experience with them. What I can tell you from experience is that the converter clutch is a weak point. So is the factory ford programming that allows slipping/mushy shifts and t/c clutch engagement at too low of speed and too often engages and dis-engages the clutch causing wear.
Look for companies that sell upgraded clutch in the t/c and kevlar bands and clutches. Reprogramming the pcm is easy for most good chip places, but a lot of people have problems with some of the companies.
A good factory rebuild with and upgraded t/c will usually last 100K if not abused too hard.
Look for companies that sell upgraded clutch in the t/c and kevlar bands and clutches. Reprogramming the pcm is easy for most good chip places, but a lot of people have problems with some of the companies.
A good factory rebuild with and upgraded t/c will usually last 100K if not abused too hard.
Senior User
Joined: Aug 2003
Posts: 269
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From: Cleveland/Akron, Ohio
What is it doing?
I thought I blew my trans, my vehicle would only creep forward or reverse no matter how much you pushed on the accelerator pedal(didn't want to call it a "gas" pedal). Dropped the trans, and it turned out to be only the torque converter that was completely shot. Got another one(make sure it's for a diesel), and re-installed trans, back in business for less than $250!
I thought I blew my trans, my vehicle would only creep forward or reverse no matter how much you pushed on the accelerator pedal(didn't want to call it a "gas" pedal). Dropped the trans, and it turned out to be only the torque converter that was completely shot. Got another one(make sure it's for a diesel), and re-installed trans, back in business for less than $250!
Thread Starter
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Cross-Country
Joined: Jul 2003
Posts: 86
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From: Evans,GA
What happened with ED04
I had it loaded down and I stopped for a light. When I took off again and it changed into 2nd gear the engine reved up like it was in park or neutral ---not going forward. I made it home slowly and now it does the same unloaded. If I pull it down to drive 1 it will take off pretty good but I soon as I shift up to 2nd it boggs down. Once you ease (very slowly) up to hi-way speeds, it goes down the road as fast as you want to. And reverse works fine.
Elder User
Joined: Oct 2002
Posts: 743
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You've lost the 2nd gear band, servo, or valve body problem in actuating it. ( I think. ) The c-6 has a band for 2nd and the e40d is modeled after the c-6, so it goes that the e40d should have a 2nd gear band. If you keep driving it this way, you will smoke what is left. Fix it right away or you will burn up what's left of everything good.
I would pull the pan and look inside to see what I find, if you can. If you find a lot of stuff that looks like crunchy,oily drum brake lining, then the band came apart. If not, then I would check the 2nd gear apply solenoid/hydraulics and the servo. You can check the servo with compressed air and a good tranny manual. You can bench test the solenoid ( at least I think it has an electric solenoid for 2nd gear application) with an electronic volt-meter.
Try asking some of the guru's around here or over at tccoa.com. Somebody should know something of what to do better than me.
I would pull the pan and look inside to see what I find, if you can. If you find a lot of stuff that looks like crunchy,oily drum brake lining, then the band came apart. If not, then I would check the 2nd gear apply solenoid/hydraulics and the servo. You can check the servo with compressed air and a good tranny manual. You can bench test the solenoid ( at least I think it has an electric solenoid for 2nd gear application) with an electronic volt-meter.
Try asking some of the guru's around here or over at tccoa.com. Somebody should know something of what to do better than me.
