While trying to track down a chronic leak I notices that the aluminum triangular piece on the turbo was covered in oil. I took my socket wrench with the intention of tighteing it, but none of the three screws would budge. I cleaned as best as I could using Engine Bright (this stuff can't be good for the environment) and then notices that the big hose running from the Turbo Box behind the headlight was "melted" under the hose clamp that attaches it to the turbo side. I was able to pull the hose out of the clamp by a gengle tug. The condition of the rubber was gooey and disintegrated.

I will need to replace the hose. It has an electrical sensor built in which seems to want to stay installed in the hose. I tried running the car without the hose and it didn't want to cooperate, since all the hose does, I believe, is deliver clean air to the turbo fan, I have to assume the absense of the electrical hook up is the cause of the engine failure light and the failure of the engine to run properly. It was sufficiently bad, that I dared not drive the car away from my house.

I've read a considerable amount about rebuilding the turbo, but I'd rather not get into that right now. Its seems fairly easy, however, so I wonder why my mechanic charged me $1,400 for a turbo on my other 940 several years ago.

Can someone explain to me what this failed hose is all about and what the electrical connection into it does?

And even more important, I'm curious whether the rather considerable amount of oil covering everything around and under the turbo could be coming from the turbo end of the failed hose? IF so, will replacing the hose end the oil leak?