C420sailor
Explorer Addict
- Joined
- July 29, 2008
- Messages
- 2,315
- Reaction score
- 1,888
- City, State
- Long Island, NY
- Year, Model & Trim Level
- 98 XLT SOHC, 99 EB 5.0L
^^^ everything is now suspect
Servos looked good?
Servos looked good?
I haven’t looked at the servos yet, I will check them tomorrow. But I was thinking today about the TCC solenoid and how the resistance of my original one is different from the new one. I think the older style was like 1-3 ohms and the new ones I think are 10 ohms. How does the computer handle the new solenoid being a different value? I think I’m going to try swapping the electronics tomorrow and see if that fixes it along with putting in the old valve body. I looked at the valve body from the old transmission tonight, everything works on it so I guess I’ll have to use it. It does have some kind of shift kit tho, so hopefully that isn’t an issue. I noticed the 2-3 backout valve doesn’t have a spring like the other one did. The tail is solid and the spot where the little plate usually goes to hold the spring is it’s held in with a kind of clip and the valve doesn’t move much because of how it’s made. Not sure if I should swap it out for the one out of the bad valve body, but I’m going to risk it and leave it in.^^^ everything is now suspect
Servos looked good?
Yes, there is a kit for the one valve that is stuck. The other one is free now, but a kit is made for it as well. It doesn’t matter tho, I will not use it knowing that it is redesigned for 02+. I don’t think it is a good idea to put in a 4r70w later than an 01 in a pre 98. It just isn’t the same as far as the valve body goes.Okay good, then it's a 1996 DTRS, not the 2002 part? At that point, I'd suspect the solenoids or the VB itself, it sounds like the builder didn't fully check or test all of the parts for movement.
The VB parts that you discovered not moving freely, are they by chance among those which Sonnax replaces with one of their many small kits? They have a half dozen or so part kits for various VB items, some for improved performance, and some due to old age wear issues.
$200 isn’t relatively cheap? Price an actual new transmission, and that’ll change.So along with the TCC solenoid being different, the valve body is a new design. The transmission is a 2002, so several of the passages were moved on the valve body, such as the 2-3 backout valve having been connected to the EPC, but was moved to the number 2 shift solenoid. An overdrive servo regulator was added, along with several other changes.
I feel like it was a mistake putting in a 2002 transmission, I don’t think the computer knew how to handle the changes with the valve body or electronics. Hopefully I haven’t burnt this transmission up, or my computer. But it drove fine for 3 or 4 days, then stopped, so it seems like something may have gotten broken.
I’m going to use the valve body I have, I don’t have time to wait for a new valve body. Although at this point I doubt using a 2002 valve body would work so im not even sure which one I should buy. And they aren’t “relatively inexpensive” either, $200+ isn’t exactly cheap. It’s not like I can buy all three flavors and try them out, and I’ve already spent way over my budget on this thing. Are they even interchangeable? I’ll look at the cases before I swap them over, but none of the literature I’ve found says the cases were changed. I don’t see how it would be an issue if I check it over and clean it good and everything lines up like it should. Worse thing that can happen is that I’m still in the same spot as I was yesterday. Besides, I’m pretty sure this trans is going to have to be removed anyways at this point, so might as well go for a Hail Mary.
I swapped the OD servo and no change. This Kevlar belt you mention sounds like it very well could of been the issue. Thank youThose choices can all be possible from the rebuild, not trying to damn the builder, just suggesting the trans isn't inherently defective or weak. The OD band is always a big weak link, the prior owner may have noticed a slipping or thought it was time to get rid of it. Also the OD band is possibly a Kevlar band, which is a poor choice unless the line pressure is increased. The Kevlar requires more pressure to hold the drum, to not slip; yes it will last longer, but only if it isn't slipping. So the line pressure may not be high enough for the OD band, and it's too late to correct it if it was slipping before. The OD servo you can replace if you think it may be leaking etc.