Hi,

This is on my 82 300CD. In december during a cold spell, out of the blue I got a horrible screeching sound from my speedometer cable. So bad that I had to pull off the highway and disconnect.

I got some speedometer cable lube (black liquid) and applied it to the cable per the instructions. Was great after that, not that Ive run the car much this winter. But it showed far less bounce, no noise, very smooth.

This morning I go to drive the car about 35 miles. The bounce is back, but only sometimes, like it comes and goes depending upon how severe the last pothole was. At about 30 MPH, Id start to hear a slight whirring noise, though it would go away after 50ish. Sometimes it is audible, sometimes it is not. Sometimes it is bouncing, sometimes it is not.

Does this mean that I just need a new speedometer cable? Tried fiddling around a bit with the routing, but nothing helps.

Thoughts?

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (116k)
1991 350SD (206k)
1991 300D (228k)
2008 ML320 CDI (199k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (267k)

Past Diesels:
1983 300D (228K), 1985 300D (233K), 1993 300D 2.5T (338k), 1993 300SD (291k)

yeah, I'd get a replacement cable. the lube helps some, but you've likely got metal shrapnel in the sheath, and it's just too far gone.

__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!