Gear Box+Cooling system L322 4.4 V8

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bigjudd

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Location
London
This is my first post!:cool:

Although I have read many other posts about gear box problems with the l322 I haven't found anything that quite relates to the problems i have been experiencing.

I've had my gear box re-furbished 6 months ago and it's still under warranty.

After 1 month of using the newly re-furbished box, i had a transmission fault code come up after a very violent gear change. The fault on the dash was "Transmission Failsafe". After limping back to transmission repairs garage the mechanics replaced the gearbox seals and told me that the seals had failed and most of the fluid had escaped!

I've been driving the car for another 4 months with no problems until recently, i've found that when changing gear from 2nd to 3rd at 2000rpm there is a slight bump. One of the mechanics at the transmissions garage printed off a diagnostics report. One of the codes "Electric Thermostat Circuit Fault" could be forcing the gearbox to overheat the mechanic said.

It may also be useful if I mention that the gear change bump fault does not occur until the car has warmed up, and I have also just recently replaced the header tank due to a crack and the thermostat.

Answers on a postcard!!!
Any help welcome,
Thanks Guys.:)
 
This is my first post!:cool:

Although I have read many other posts about gear box problems with the l322 I haven't found anything that quite relates to the problems i have been experiencing.

I've had my gear box re-furbished 6 months ago and it's still under warranty.

After 1 month of using the newly re-furbished box, i had a transmission fault code come up after a very violent gear change. The fault on the dash was "Transmission Failsafe". After limping back to transmission repairs garage the mechanics replaced the gearbox seals and told me that the seals had failed and most of the fluid had escaped!

I've been driving the car for another 4 months with no problems until recently, i've found that when changing gear from 2nd to 3rd at 2000rpm there is a slight bump. One of the mechanics at the transmissions garage printed off a diagnostics report. One of the codes "Electric Thermostat Circuit Fault" could be forcing the gearbox to overheat the mechanic said.

It may also be useful if I mention that the gear change bump fault does not occur until the car has warmed up, and I have also just recently replaced the header tank due to a crack and the thermostat.

Answers on a postcard!!!
Any help welcome,
Thanks Guys.:)
not heard of this one , allthough if you look on some of the bmw forums you may find something close to your problem . in your v8 4.4 is a zf autobox i have the same in mine and i am lead to belive the zf auto box was a better gearbox than the gm gearbox fitted to the diesel l322
but both do seem to have their niggles
coming back to the zf box i have heard of the gearbox doing something like yours but this is when slowing down from 3rd -2nd -1st known on the bmw forums as the tranny slam , i have had this happen to me a few times
 
Thanks, i've checked the BMW forums for tranny slam, I also have this, but not massively. I can also replicate the fault when in steptronic mode.

Here are the codes i was given at the garage:CODE1=p112b (62,71,12,2b), CODE2=p0000 (62.71,0,01).
Lower down on the print out it list CODE1 as "Air Suspension System CAN error, and CODE2 as Temporary System Deactivation.
Then finally at then bottom of the print out CODE1 P0000 Electric Thermostat Circuit Fault, Last Occurrence, Plausibility.

I'm now totally confused, does anyone know one a good independent LR Specialist in West London or nearby?
 
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