Audi gear box from wax engine same as passat avg engine would it fit

The Passat and A4 Motors are interchangeable for the most part. You need to make sure you have the SAME CODE ENGINE (it is stamped onto the head on the Front Right side of the head)

If the Same Stamp is there, it is a Direct Fit and you do not need to move any harness

No, Other than the frame of the car, and in some models the engine, most of the parts are different.

If no external leak and the transmission fluid colour looks white, the problem belongs to the automatic gearbox oil cooler. The oil cooler has broke mixing the gearbox oil and coolant causing this milkshake. It's a small radiator core type oil / water heat exchanger. It is cracked inside and transmission oil is mixed with engine coolant. Because the transmission oil pressure is greater than engine coolant pressure, the transmission fluid level drops. See also the coolant colour inside recovery coolant reservoir inder bonnet! It could be like this:


The automatic gearbox oil cooler type oil / water heat exchanger (oil cooler):


In the picture above the transmission oil pan was removed for oil filter replacement.

Hi Craig,
I'd suggest that the oil seal which seals between the torque converter neck and the gear box casing is damaged and will need replacing. The job seems simple but in fact can result in breaking the gearbox oil pump, when the torque converter is refitted to the gear box. the neck has to align with the gears inside the gear box and the oil pump, if the torque converter is not fitted correctly the damage I've mentioned will take place when refitting box.
If you would like to proceed let me know.
Regards Johngee10

Hi i had the same problem with my a4 fsi sport auto gear box i had to have the gear box changed seems like a common problem with the a4 auto gear box.

as 2nd/3rd are the most used gears chances are the syncromesh on both these gears has gone,you need to strip g/box completly/or buy a recon box.

Oh we used to have a 1998 voltswagon passat and it died and did the same thing! you have to unhook battery, let set 5 minutes hook it back up and start car then try!

automatics can be changed to manual but its not that easy. Not only do you have to change the gear box you have to change all related parts (ie: driveshaft, flywheel, ujoints etc.) you then have to hang a clutch petal mount a slave cylinder. Might want to rethink this project.

Hi Frank I am a technician with audi myself It may be that you require an engine e.c.u and not a gearbox one however has your A4 had any recalls carried out on the gearbox since purchase if not that would definately be something worth checking hope this helps.