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[meaney]

hi guys,ive recently discovered that,as im told by my mechanic,my gearbox needs replaced and i need a new torque convertor. do i need a box from another 3.0v6 or can i fit a box from any other model ??
P.S its an automatic

[achoo81]

Use only a box from a V6 as they are built to take the grunt,the 2.5 or 3.0 ltr box up to around1998 should be identical obviously get as lower mileage one as possible. If you think it's worth it and you can afford it get a recon box.  

[VXL V6]

3.0 and 3.2 have an AR35 autobox and all others use an AR25. If you put an AR25 box in a 3.0 or 3.2 it will not be able to handle the extra torque.

Ideally you need to test drive the car that you get the AR35 from or get a warranty. Before fitting I recommend dropping the front sump and checking if there are any bits of thrust washer.

[Marks DTM Calib]

Whats the symptoms?

[meaney]

ok i will start huntin in the morning, thanks for that

[Marks DTM Calib]

But, what are the fault symptoms.......when I see statements like

need a new torque convertor

I suspect the person doing the diagnosing hasn't got a clue what they are talking about!

[meaney]

car was down on power,felt like i was driving with the handbrake on,wouldnt go up hills. mechanic says he read the codes and there were various ones for the gearbox and the torque convertor

[Marks DTM Calib]

car was down on power,felt like i was driving with the handbrake on,wouldnt go up hills. mechanic says he read the codes and there were various ones for the gearbox and the torque convertor

Yes but, like what.......the fact that the gearbox is getting drive to the wheels and not slipping sudgests otherwise.......were the revs red lining?

[meaney]

his actual words were, the valves in the box are f*@ked

[meaney]

no revs were normal,driving the car felt like someone had their hand over the intake,it also gave out a large thump when going into 2nd

[Marks DTM Calib]

Well in which case the gearbox is on a gear and the engine output power is down.

Any sign of an ECU fault light on the dash?

When was the fuel filter last changed?

Does the engine tick over smooth?

[meaney]

id say the filter hasnt been changed in 3 years,engine runs perfect,paperclip test showed me a fault in the knock sensor,i did tell this guy who looked at the car, he actally got another mech to read the codes,dont know what diagnostic equip he used ? he rang me yest and told me all the faults showing were for the box ?
I was going to take it to my local dealer to get them to read the codes just in case

[Elite Pete]

Try this and save some money

http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

Once you've got the results post them up here

[Marks DTM Calib]

Well, the fuel fitler is long over due a change!

And if there is a knock sensor fault then the ECU retards the timing and you get low power output......again, all sudgesting its not the box!

[Jay w]

if the knock sensor is out then it will like driving a car that is dragging a big weight.
My knock sensor was faulty, the car felt hugely underpowered, the only way to get the car to do anything is to floor it, and if thios was done at the wrong time it would really bang down a gear with an almighty shunt.

once mine was done it is business as usual, fuel economy has returned (as much as it can in an omega!!) and it is a sprightly as it was before