oil leak!!!!!!!!!! help

[vonbeck]

when i got home tonight and got out of the car i noticed a black speckled trail behind me on further inspection it seems to be coming from the white sensor in the pic below can anybody tell me what it is and has this happened to anybody else? its on the right hand side below the oil filler looks a real barsteward to get at

[A80Avant]

that is not a white sensor, that is the oil pressure sender and next to it is the dipstick. Oil could be coming from either these 2 at their bolts.

[Dingo]

Thats your oil pressure switch and yes its in a bad place because of the plastic cowling right next to it, see pic.

[driftin jo]

The little one is the oil pressure switch, one above is oil pressure sender.
Never seen either of them leak but I suppose there is a first time for everything.

[A80Avant]

mine may also be leaking atm, and ill have more photos on saturday once the radiator is out of the way....

[vonbeck]

god i love this forum 9 minutes from posting and i get a reply, i dont think its coming from the dipstick its a bad leak its pouring out but no drop on the oil pressure gauge is it wise to get a new one?

[vonbeck]

is this the correct part number for aby?
056919081E
and is it a dealer only or gsf etc ta
and sender g10
034919561 ta very mucho
i believe its a bendy spanner job anybody know the size it is?

[UrS4boy]

is this the correct part number for aby?
056919081E and is it a dealer only or gsf etc ta
and sender g10 034919561 ta very mucho. i believe its a bendy spanner job anybody know the size it is?

F1 oil pressure switch. Very common failure point. Will p*ss out oil in a stream and empty the sump in short order.

056919081E is the correct 1.8 bar switch, very common across the Audi and VW line (but not the UrS6 which used a 1.4 bar switch). Dealer or aftermarket but Dealer is probably safer. More info here:

http://forums.quattroworld.com/s4s6/msgs/96161.phtml

[vonbeck]

bloody brill thanks guys

[mcandmar]

I had to change mine a few weeks back for the same issue. Ended up having to pull the radiator out to get at it, good luck

[TDi90]

Yep, i did mine and the rad and cowling had to come out.

[newsh]

Sometimes I think its quicker to just bite the bullet and take the rad out, I can do mine in 10 mins now (but I don't have AC or the plastic shrouds), you can be sure they're done up correctly too. Good opportunity to check and clean the MFTS connections too. And the small hoses circled in the post above

[vonbeck]

Probably take out the rad I suppose there is a sticky for it

[johne]

If you don't want to take the radiator out because you don't want to loose the coolant or you have A/C then you can remove the power steering hydraulic pump instead and get to the oil pressure switch that way.

Equally if you don't have A/C, you can remove the top radiator stay, loosen but not remove the bottom radiator mount, undo the side radiator mount where it attaches to the inner wing and you can tilt the top of the radiator forwards enough to reach the oil pressure switch without draining the coolant.

John

[vonbeck]

cant get the part till tuesday but will have a go at freeing up the rad as johne has described, if its not pi@@ing down tomorrow cheers