Transmission valve body

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

scott schmerge

Full Access Member
Joined
Oct 9, 2018
Posts
612
Reaction score
284
Location
Charlotte, NC
In my experience, you spin the wheel of fate with additives made to "quiet", "fix", or "remedy" something. Sometimes you can run another 60k miles, sometimes you can chew up a pump or clog something in 5 minutes. This especially applies to radiator stop-leak, but that's another story..

You had luck with the dr.tranny, and that kind of scares me because it's a friction modifier- as in "make the Torque Converter Clutch grab better", insinuating that a)the clutch is worn, or b)not getting enough pressure from the pump..

Mike

Thanks Mike! Great info. Assumed it was worn torque converter clutch or bad Valve Body. Hoping for the latter (as I can fix that). I think I’ve decided to bite the bullet and get the 30k mile tranny installed.

I’m going to try some Lucas trans fix as a temporary fix. Recognize I may grenade it, but $10 and I’ll still end at the same outcome- new (to me) transmission.
 

ryanjl

Full Access Member
Joined
Dec 31, 2015
Posts
3,019
Reaction score
1,793
Location
KCMO
You putting the new transmission in yourself, or having it done?
 

ryanjl

Full Access Member
Joined
Dec 31, 2015
Posts
3,019
Reaction score
1,793
Location
KCMO
That $3,500 seems like a good deal for an installed transmission. Is it a Rover shop, or just a general mechanic?
 

BikePilot

Full Access Member
Joined
Aug 25, 2018
Posts
184
Reaction score
72
Location
Golden Colorado (USA)
Was not aware of this. Did you see this on a forum?
Yes, rennlist. I have a Porsche sports car and considered a cayenne before getting the land Rover so poked around a bit in the cayenne forums. Look in the cayenne 955 forum, I think there's a sticky near the top that summarizes common issues. Iirc valve bodies are a common problem on 2004 Cayennes.
 

scott schmerge

Full Access Member
Joined
Oct 9, 2018
Posts
612
Reaction score
284
Location
Charlotte, NC
Yes, rennlist. I have a Porsche sports car and considered a cayenne before getting the land Rover so poked around a bit in the cayenne forums. Look in the cayenne 955 forum, I think there's a sticky near the top that summarizes common issues. Iirc valve bodies are a common problem on 2004 Cayennes.

Got it. Thanks.
 

scott schmerge

Full Access Member
Joined
Oct 9, 2018
Posts
612
Reaction score
284
Location
Charlotte, NC
3rd gear, like 40-60 mph while accelerating? Shuddering in this area is usually one of 3 issues:

1.Dirty/contaminated fluid (ruled out- you changed it)
2.Slipping torque Converter clutch (Suspect)
3.Lack of proper fluid pressure from the EPC solenoid(s) (Suspect)

We can't do anything about #2, so let's think about #3. A myriad of issues can cause this pressure to be wrong:

-bad signal from the controller(could be related to the program, a pinched wire, leaking mechatronic sleeve, etc.)
-bad solenoid(you replaced it)
-something leaking IN the transmission that is lowering the delivery pressure (bad seal, gasket)

Did you notice any damaged wiring while you were in there?

This is roughly 107% of my knowledge of transmissions.. To RyanJL's point, check and see if there are others with this- many other makes use this tranny.

Fingers crossed..

Mike

So, took it in for formal diagnosis. After all that, he swears up and down it needs a software update. He is who my lr Indy uses for trans work.

According to my gap tool, trans software is current. I did a reflash already. Would my independent Lr shop have a different software patch? I’m feeling like this seems suspect, but he said that everything seems okay and that pressures are just wrong but consistent (so he doesn’t feel like any leaks).

What say you? It’s $340 for my independent to do the flash (especially if I can do it myself for free). Hate to throw $340 at it and it not work, then again I was prepared to spend 3-4K.

If it works, I’d gladly spend the $340.
 

ryanjl

Full Access Member
Joined
Dec 31, 2015
Posts
3,019
Reaction score
1,793
Location
KCMO
If it's the same indy shop that will do the transmission swap, I'd see if he would credit the $340 towards the transmission swap if the reflash doesn't work.

But I don't see how he'd have any voodoo program that no one else has.
 

scott schmerge

Full Access Member
Joined
Oct 9, 2018
Posts
612
Reaction score
284
Location
Charlotte, NC
If it's the same indy shop that will do the transmission swap, I'd see if he would credit the $340 towards the transmission swap if the reflash doesn't work.

But I don't see how he'd have any voodoo program that no one else has.

Unfortunately it’s not the same shop...

I’m going to try the gap tool again and see if it fixes. I’ve read to reset adaptations and then re-flash (in the gap manual) which I did not do the first time. Anyone else who’s done it or has insights?
 

Latest posts

Members online

Forum statistics

Threads
36,223
Posts
217,600
Members
30,474
Latest member
sawcut
Top