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[TheBoy]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

[Nickbat]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

Yes, but the Vx dealership said they tried to read the gearbox ecu, but it wasn't allowing access...so I'm going around in circles here. 

[TheBoy]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

Yes, but the Vx dealership said they tried to read the gearbox ecu, but it wasn't allowing access...so I'm going around in circles here. 

Did it say "Unknwon ECU". Or just no communication whatsoever?

[Nickbat]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

Yes, but the Vx dealership said they tried to read the gearbox ecu, but it wasn't allowing access...so I'm going around in circles here. 

Did it say "Unknwon ECU". Or just no communication whatsoever?

Afraid I don't know the answer to that. They just said that the gearbox ecu would not allow access. 

[doz]

Did they try to talk to any other controller? Just wondering if you have generic issue or just the gearbox

[Kevin Wood]

Did they turn the radio off? I have found that can bu66er communication with the gearbox ECU.

Failing that, it points to some issue with the gearbox ECU. If a Tech 2 can't talk to it, there is a problem somewhere because comms is normally reliable, and it will be key to further diagnosis to read the gearbox codes.

[feeutfo]

You can see the valves here: http://opeloem.com/opel/omega_b_1994_2003/transmission/four_speed_automatic_transmission/valve_body.html

Not sure which is the 2-3 off the top of my head though.

As an aside.... Just wondering, but where do those filters 28 live? They look like proper filters worth changing, or at least checking as part of a service.

[Kevin Wood]

You can see the valves here: http://opeloem.com/opel/omega_b_1994_2003/transmission/four_speed_automatic_transmission/valve_body.html

Not sure which is the 2-3 off the top of my head though.

As an aside.... Just wondering, but where do those filters 28 live? They look like proper filters worth changing, or at least checking as part of a service.

I guess they are inside the valve body but they look coarse compared to the main filter, so guessing they only come into play to protect the valve body from other parts of the box disintegrating.

[pscocoa]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

Yes, but the Vx dealership said they tried to read the gearbox ecu, but it wasn't allowing access...so I'm going around in circles here. 

Did it say "Unknwon ECU". Or just no communication whatsoever?

Afraid I don't know the answer to that. They just said that the gearbox ecu would not allow access. 

I would change the crank sensor before anything else - if that is breaking down the gearbox could  have duff info regarding engine speed and will be confused as to gear selection. A personal theory I accept but seemed to cure problem on mine a couple of years ago.

[Nickbat]

If you are getting "Automatic Gearbox" on MID, get gearbox codes read, anything else is heresay.

Yes, but the Vx dealership said they tried to read the gearbox ecu, but it wasn't allowing access...so I'm going around in circles here. 

Did it say "Unknwon ECU". Or just no communication whatsoever?

Afraid I don't know the answer to that. They just said that the gearbox ecu would not allow access. 

I would change the crank sensor before anything else - if that is breaking down the gearbox could  have duff info regarding engine speed and will be confused as to gear selection. A personal theory I accept but seemed to cure problem on mine a couple of years ago.

Hmm. Fair point. If the problem gets worse, I'll change it (I have spare in the boot).

[albitz]

I may have a gearbox ECU you can try as a means of eliminating (or otherwise) the ECU as a cause. I will have a look shortly.
If I do have one it will be from a 2002 3.2 which  I suspect will be the same as yours,but may be worth someone confirming before sending/installing.

[Kevin Wood]

Hmm. Fair point. If the problem gets worse, I'll change it (I have spare in the boot).

Worth finding a way to read the autobox codes first, IMHO.

I may have a gearbox ECU you can try as a means of eliminating (or otherwise) the ECU as a cause. I will have a look shortly.
If I do have one it will be from a 2002 3.2 which  I suspect will be the same as yours,but may be worth someone confirming before sending/installing.

Config will be different but electrically it should be the same, so would work as a means of eliminating the car from the code reading issue.

Not sure if the gearbox ECU can be reconfigured for a different engine with Tech 2. Quite possibly.

[feeutfo]

You can see the valves here: http://opeloem.com/opel/omega_b_1994_2003/transmission/four_speed_automatic_transmission/valve_body.html

Not sure which is the 2-3 off the top of my head though.

As an aside.... Just wondering, but where do those filters 28 live? They look like proper filters worth changing, or at least checking as part of a service.

I guess they are inside the valve body but they look coarse compared to the main filter, so guessing they only come into play to protect the valve body from other parts of the box disintegrating.

I've seen those filters on other valve body's, and they are exceptionally fine gauze within the sections shown in the drawing. Far too fine to draw, and looks like they never bothered to show the filter material because of that.

[Kevin Wood]

I've seen those filters on other valve body's, and they are exceptionally fine gauze within the sections shown in the drawing. Far too fine to draw, and looks like they never bothered to show the filter material because of that.

The main filter that picks up the fluid from the sump is paper, though, so I would have thought it would be more effective than the gauze? Hence my suggestion that they're only there to prevent contamination of the valve body if the pump, or something else upstream, gets chewed up.

Looks like the valves have their own little finger filters on them too

[albitz]

Pic of ECU.Might be worth checking if its the same ? Can post it to you if you want to try a swap.



Christ that pic is huge ! PB seems to have binned the resize option.