Shifting Solenoid
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Postmaster
Joined: Jun 2004
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From: Pleasant Hill, MO
Shifting Solenoid
Do we have a shifting solenoid in the E40D transmission?
Another question. Where is the EEC computer located in a 94? I know where the test wiring is, but don't know where the computer is located.
Ryan
Another question. Where is the EEC computer located in a 94? I know where the test wiring is, but don't know where the computer is located.
Ryan
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Joined: Sep 2003
Posts: 641
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From: Louisiana
It's going to the the further most one to the left fender. Rectangular shape in a vertical fashion. The other 2 should be square and under the Brake Reservoir nearer to the steering column. If you look at your hood hinge spring, it should be below it and above the wheel skirting.
Post Fiend
Joined: Nov 2001
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From: Topsfield, MA
No you take it out through the engine compartment.
The computer has a 10mm nut on it that you turn to unplug the connector from the computer. There is a retaining plate that needs to be taken off. At that point the computer is free, but you probably can't get it out without moving the plastic fenderwell. Remove a couple of the small screws holding the fenderwell in place, as well as that bolt on the inner part of the fenderwell (looking at it from the tire). You need to pull the fenderwell a little in order to have enough room to pull the computer out of it's socket.
The computer has a 10mm nut on it that you turn to unplug the connector from the computer. There is a retaining plate that needs to be taken off. At that point the computer is free, but you probably can't get it out without moving the plastic fenderwell. Remove a couple of the small screws holding the fenderwell in place, as well as that bolt on the inner part of the fenderwell (looking at it from the tire). You need to pull the fenderwell a little in order to have enough room to pull the computer out of it's socket.
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Postmaster
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From: Pleasant Hill, MO
oh! I got it... The computer is mounted inside, where it's plugged, and mounted with screws. Now I understand what was meant by fredric when he said I might need to remove the fender to remove the computer. Thanks guys, I'll check it out and get back if I have results.
Ryan
Ryan
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Postmaster
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From: Pleasant Hill, MO
okay, I made sure I had some good connections, cleaned off a little corrosion, and still having the problem. I'll have to look for the computer's ground and make sure it's still good.
I'm still looking on any information on any kind of 'shifting solenoid.' I don't know if I have one, but if I do, I'd like to know. I'm running out of things that could be causing the problems.
Ryan
I'm still looking on any information on any kind of 'shifting solenoid.' I don't know if I have one, but if I do, I'd like to know. I'm running out of things that could be causing the problems.
Ryan
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Joined: Sep 2003
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From: Louisiana
Originally Posted by FghtinIrshNvrDie
Do we have a shifting solenoid in the E40D transmission?
Another question. Where is the EEC computer located in a 94? I know where the test wiring is, but don't know where the computer is located.
Ryan
Another question. Where is the EEC computer located in a 94? I know where the test wiring is, but don't know where the computer is located.
Ryan
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Postmaster
Joined: Jun 2004
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From: Pleasant Hill, MO
Well, I'm not asking for more diagnosis. I've had about 3 unsuccessful goose-chasing threads. I'm trying to do this on my own instead of taxing everyone for more ideas. Well, here goes anyway, since you asked. 
Sometimes has trouble shifting out of first, unless you're doing a manual upshift. Then I can always get to 2nd gear. Sometimes when I'm uneventfully driving along in OD, it'll slide out of gear. Sometimes it hops right back into gear on it's own, and other times I just sit there and rev while I wait for it to find a gear.
Physical inspection at AAMCO says the transmission is mechanically sound. I'm inclined to think it's electrical.
I cleaned and reattached my connections on the EEC computer that I talked about earlier in this thread. The only other ideas I have is that my EEC doesn't have a good ground, or this shifting solenoid is fritzy.
Ideas welcome
Ryan
Sometimes has trouble shifting out of first, unless you're doing a manual upshift. Then I can always get to 2nd gear. Sometimes when I'm uneventfully driving along in OD, it'll slide out of gear. Sometimes it hops right back into gear on it's own, and other times I just sit there and rev while I wait for it to find a gear.
Physical inspection at AAMCO says the transmission is mechanically sound. I'm inclined to think it's electrical.
I cleaned and reattached my connections on the EEC computer that I talked about earlier in this thread. The only other ideas I have is that my EEC doesn't have a good ground, or this shifting solenoid is fritzy.
Ideas welcome
Ryan
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From: Louisiana
Have you tried the usual things, like fluid and filter change, flushing. Check the connections at the tranny itself. I don't know if the E4OD uses a vacuum modulator like the old tranny's but check the line to it and see if it's in good condition and if any fluid is on the vacuum side. Try putting some Lucas treament for AutoTranny to see if it makes a difference. Sounds like either fluid or something in the Valve Body.
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Postmaster
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From: Pleasant Hill, MO
The ATF with lucus treatment is on it's second round and is fresh. As far as the internal workings of a transmission, I don't think I can do that. I don't have the tools or place needed to work on it. I'm telling you, this has been beat dead a bunch of times, and I really am just stumped. Mechanically, it's sound.
Ryan
Ryan
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From: Louisiana
I'm not up to speed on the E4OD, I'm going to have to tho. I just bought a '92 with it. All the external stuff on it should just be sensors to tell the computer what the tranny is doing. Most of the mechanical functions are performed by the valve body inside the tranny. There are numerous passages with springs and ***** acting as check valves and there are small floating pistons. I don't know how far you want to take this, you can find a manual that tells you how to disassemble, clean and reassemble the valve body, you can try replacing it or purchase a Shift Kit and this will give you the instructions you need. I would lay odds that from your description, this is where your problem lies(spelling).