My 94 850 T5 wagon has a mysterious noise, which I believe I have pinpointed to the turbo. It is a rattling sound that is loud and clear from inside the car, but almost imperceptible from under the hood with the car running. With a close listen, I can hear it coming from the turbo charger. The sound only occurred at idle, and would go away with a gentle rev of the engine. Presently, it persists even when the engine is revved. I've noticed that the boost indicator does not move as much as it did when I got the car at 57K miles. It now has 110K. Can anyone shed any light on what my problem might be? I've had mechanics check it out and they think I am crazy! Maybe I am ;-).
Thanks,
Brent

Check for something loose (obviously) that will effect your vacuum pressure. The gauge for the boost is vacuum driven.

Klaus
--
98 V70Rawd(101Kmi), 95 854T(85K mi), 75 164E(173K mi)

Just an old story-

I thought I had something seriously wrong with my '82 242. Rev the motor, and a high-pitched rattle came from the cowling area. I chased all sorts of stuff. It finally turned out to be a loose bolt on the firewall that held in the cowling.

These things are hard to find, but it's probably minor. Good luck!

-Dylan

Thanks Dylan, I hope so!