A442F rebuild

[Malleus]

Mr. Google returned no joy to my search for this (I was hoping for a A442F version of Jimmy's A440F).

My '94 (w/ 275k on the clock) is slipping in reverse. I can get about 20-yards before the gear slips and I'm in neutral. After about 20-yards, I'm back in gear, if I haven't hit something. No trouble in forward (yet), but it doesn't pass the slip test from the FSM.

I am not the original owner (no surprise), but I haven't seen any high xmsn temp light, so I'm assuming it's the solenoid. I see from the parts list there are four solenoids, but only three of them are available. The FSM says nothing about troubleshooting the solenoids or whether there's any solution to a failed solenoid, other than the implied replacement.

At this point I think I'd like to try to rebuild the valve body, rather than take the whole thing out, ala Jimmy, on the off chance the solenoid is the problem. (Yes, only because I'm lazy) I know that eventually I'll have to pull the case and swap out the clutches, but I'd like to postpone that for as long as possible.

So, any rebuild experience out there would be appreciated.

 

[ppc]

Checkout post #5 in the thread below

Transmission solenoids 1993 TLC

forum.ih8mud.com

 

[Malleus]

Checkout post #5 in the thread below

Transmission solenoids 1993 TLC

forum.ih8mud.com

THAT is good to know!

 

[roadstr6]

THAT is good to know!

I have heard also that the neutral safety switch can be a common problem for the A442 reverse slipping problem. Does your R indicator light come on? How about your back-up lights? Essentially, if the truck doesn't recognize that it is in reverse, it tries to shift to neutral by default, causing the slip.

 

[Malleus]

Now there's an insightful piece of troubleshooting!

This truck has been in Tuscaloosa, supporting a Marketing B.A. for the last three years. Last year, the No. 1 by-pass hose spring a leak. Since I couldn't get to it in a timely manner, I sent it to the Tuscaloosa Toyota dealership (pro tip-don't do this) to have the hose replaced with a GENUINE Toyota hose and OEM clamps. Here's what I got:

Additionally, the reverse lights stopped working about that time. A little inspection indicated that the EA1 connector was coated (inside and out) with the solids from the coolant leak. I have yet to pull the connector apart and clean/replace the individual leads, but one result was the reverse lights are not functioning.

I didn't think this was the problem though, only because the disengagement is almost perfectly related to distance. I can back out of (or in to) a parking place without any trouble, but if I try to back into the driveway, I get to the same point every time before the xmsn slips.

Cleaning this connector and the individual leads is first on my list though (before the valve body work), so if that does fix the problem, I'll post back and let you know.

Good catch!

 

[BILT4ME]

Now there's an insightful piece of troubleshooting!

This truck has been in Tuscaloosa, supporting a Marketing B.A. for the last three years. Last year, the No. 1 by-pass hose spring a leak. Since I couldn't get to it in a timely manner, I sent it to the Tuscaloosa Toyota dealership (pro tip-don't do this) to have the hose replaced with a GENUINE Toyota hose and OEM clamps. Here's what I got:
View attachment 2187710
Additionally, the reverse lights stopped working about that time. A little inspection indicated that the EA1 connector was coated (inside and out) with the solids from the coolant leak. I have yet to pull the connector apart and clean/replace the individual leads, but one result was the reverse lights are not functioning.

I didn't think this was the problem though, only because the disengagement is almost perfectly related to distance. I can back out of (or in to) a parking place without any trouble, but if I try to back into the driveway, I get to the same point every time before the xmsn slips.

Cleaning this connector and the individual leads is first on my list though (before the valve body work), so if that does fix the problem, I'll post back and let you know.

Good catch!

If you do need a new (used) transmission, I think @slow95z has these and throws them away because nobody needs them.

 

[slow95z]

I do, come get one and it's free. If you want me to ship it I charge for the trouble of loading it up and stuff but not much.

 

[Malleus]

Well, now you're talking. Sent you a PM.

 

[yotalock]

Hey there slow95z do you have any A442f’s available?

 

[pkniland]

Does your D light light up? I have slipping in reverse, no reverse lights, and a non illuminated D. At first I thought it was the tranny but I believe it to be the NSS. I’ll fix it one day but I’ve learned to live with it for the last 40k miles