So after starting and driving my 1984 300d yesterday I noticed a noise similar to continueus tire chirp when in first gear but more of a brushy sound than a chirpy one. I know this wasn't tire squeal because the car was cold and slow. I got up to 25 and then tried to replicate the sound. So I slowed down a bit and shifted into L and the noise repeated itself again and changed with engine speed. I then went on to drive the car normally on the highway and when I approached city streets later on where I would be going back down to 1st gear again the noise wasn't there.

I did the same thing today with the same result. The noise only happens in first and when cold. Any ideas what this might be? Thanks, all comments are appreciated

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1984 300d 130k daily
1980 300sd 220k ($500 steal )
1999 land cruiser utility/off-road/tow vehicle
Formerly
Om617 swapped 1982 240d aka "rolling probable cause"
2006 v8 4runner
2009 WRX

Are you able to pinpoint where the sound is coming from? Do you feel any vibrations or rubbing when gears shift?


-Dmitry

Possibly the driveshaft support bearing

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Gone to the dark side

- Jeff

Laughing at "tire chirp" and "tire squeal" in a 300D.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now

Could be something unrelated.

Two months ago I had a somewhat similar noise.
With an open window and driving close to walls I was able to hear it clearer on the passenger side more than driver side.
Sound is sometimes hard to pin point.

Turned out to be the front brake pad retain spring (metal double T thing that holds down the back side of pad) had broken and the metal was leaning into the disc.

Sound may vary depending on the degree of contact.

It sheared one of my brake pad sensors without eliciting a dummy light.

Anyway, good luck in your discovery process.

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1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
********************
1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD

Is it an automatic transmission?

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.