Transmission / Gearbox Oil Pump Failure

[waynerp]

Hi One & All

OK i'm still having a MAJOR problem with my 2003 Cayenne S.

The car is currently at a Transmission specialist.

They suspect that there is a problem with the oil pump within the transmission as it is making a noise and there is a big leak coming from the bell housing.

they say, as it is making a noise while in netural it can only be the oil pump as this is the only moving part within the transmission while in neutral.

They want to source a oil pump before taking the transmission out, but are having a big problem trying to source one.

From the responses to the posts i've already put up on here regarding this subject, and from the difficulty to obtain another oil pump, i am guessing that this is a very rare problem. i am thinking that it might be something other than the oil pump, but the mechanic seems reluctent to take the transmission out before he has got another oil pump, yet it might not be this that is causing the problem.

does anyone out there have an idea what else within the transmission / gearbox that could be making a noise while it is in netral. please dont ask me what noise it is making, as i can't here anything, but two independant mechanics have both said there is a noise!!!

also does anyone know where i can get an oil pump for the transmission?

i'm located in kent, UK

MANY MANY Thanks

waynerp

[NelsonMX]

Waynerp,

You say there is a leak at the bellhousing, so my question would be did they check the transmission fluid level? Low fluid level could be causing the noise you describe. I would hope that it hasn't caused any permanent damage to the transmission!!

Bob

[waynerp]

Hi Bob

My thoughts exactly.

They said there is no point re filling it, as it would only come out again!! fortunatley i havent driven the car since the problem was pointed out, but i do not know how long it has been going on!

Waynerp,

You say there is a leak at the bellhousing, so my question would be did they check the transmission fluid level? Low fluid level could be causing the noise you describe. I would hope that it hasn't caused any permanent damage to the transmission!!

Bob

[NelsonMX]

Waynerp,

The input shaft seal will have to be changed of course, but it is possible the low oil level is causing the noise you describe....Kind of a catch 22...but at least filling the oil would either get rid of the noise or confirm a pump problem.

Bob

[wvicary]

Perhaps a better choice would be finding a complete used transmission? I would have them remove the pan and inspect for any swarf to try and judge the condition of the gear box.