X5 transmission control module replacement..

[turquise1]

The transmission was rebuilt by a jackarse other than the original shop that I am taking my car to, and he (and his big ego) so far insisted on not making a mistake on the transmission. This I believe is the final step taken by the shop before it goes back to the transmission guy.

I am actually considering legal action if this does not solve the problem because I have been spending alot of money for buying parts (which did not solve the problem), rental cars etc.

Meanwhile they found out there were leaks from valley pan and water pump, so they are being fixed as well.

I will keep my updates to let you know what fixed the issue..

Ozzie ..

[turquise1]

Update :
My mechanic changed the torque converter, car behaved beautiful for one day, and has the same problems again ..

Any more ideas to help this suffering x5 brother?

Ozzie..

[turquise1]

The only time I could avoid getting the 'trans fail safe' warning was when the tranny guy replaced my valve body with another one. The engagement was very delayed from P to D but otherwise no error. Now he admits that he put a used one on. I will request a brand new one put on tomorrow.

Ozzie..

[fmugur]

Originally Posted by turquise1

The only time I could avoid getting the 'trans fail safe' warning was when the tranny guy replaced my valve body with another one. The engagement was very delayed from P to D but otherwise no error. Now he admits that he put a used one on. I will request a brand new one put on tomorrow.

Ozzie..

I have a tranny that has a delay from D to P. What was that you or they did to fix it?
Was the tranny or the valve body?

[turquise1]

Originally Posted by fmugur

I have a tranny that has a delay from D to P. What was that you or they did to fix it?
Was the tranny or the valve body?

I actually did not have that delay issue until they replaced my valve body (with a used one apparently) for testing. I was told my tranny would adjust and the delay would disappear, which never happened.

Now, that makes me think the one they put on was also faulty.

In your case and from what I read on several forums, valve body, or solenoids in the valve body may cause your issue..

Ozzie..

[turquise1]

Update :

After all that trial and error, finally the idiotic transmission guy accepted the fact there was nothing else left but to open up the transmission. I will let you guys know about what he finds broken in there (for sure)..

Ozzie..

[turquise1]

I dont know if you are still reading but here is the update :

Transmission guy pressure tests the transmission, opens it up (not sure before or after) and does not see any problems inside (and tranny passes the pressure test). He said that he will replace all the seals anyways.

I will go take a look at the tranny tomorrow and take photos, should I ask him to change anything else incase?

Cheers,

Ozzie..

[turquise1]

I went to look at the transmission today and everything looked fine including seals. Transmission guy says, he will replace all the seals / o-rings anyways.

He is telling me what's left is to take a look at the ABS module..

Any ideas left? Would a faulty ABS module cause this without putting any warning lights on? (other than TRANS FAIL SAFE and occasional P0720)

Ozzie..

[civdiv99]

All your symptoms sure do point to a $35 bearing as RRPhil pointed out early in this discussion. Happened to me a couple years ago. I fixed it myself, and it's an easy fix if all the slam-banging hasn't caused additional issues for you by now. Every time you rev then get the slam, you've been slipping that "A" clutch. The entire rebuild kit with o-rings and friction plates is only a few hundred bucks.

So while they have this thing out, make certain the shaft end play is well within spec.

I may have missed something critical in this thread, but I thought I read that this was supposedly rebuilt? Might want to consider that whatever was done did not rise to a "rebuild" in the sense most of us think of.

[turquise1]

Originally Posted by civdiv99

All your symptoms sure do point to a $35 bearing as RRPhil pointed out early in this discussion. Happened to me a couple years ago. I fixed it myself, and it's an easy fix if all the slam-banging hasn't caused additional issues for you by now. Every time you rev then get the slam, you've been slipping that "A" clutch. The entire rebuild kit with o-rings and friction plates is only a few hundred bucks.

So while they have this thing out, make certain the shaft end play is well within spec.

I may have missed something critical in this thread, but I thought I read that this was supposedly rebuilt? Might want to consider that whatever was done did not rise to a "rebuild" in the sense most of us think of.

Well, the transmission is opened twice already and everything checked out (bearings, seals). It also passed a couple of pressure tests. So I am (almost) positive its nothing internal. Car also drives fine when I shift manually. I really dont know what else is left to repair / change.

Only clue I have right now is that the car loses speed data (after warm up) intermittently at 40+ mph speeds and may be getting confused about which gear to change. Could be a module issue but I replaced the module with another (used) one already..

Ozzie..