I have an 87 300e and every time I let off the throttle I feel and hear metal to metal clanking sound in the transmission. Other times I hear this promblem is when I come to a stop and I would let off the throttle and engage to my brakes but when I do I feel a little jerk underneath the car. I don't know much about transmissions but some how I think that it is that. My car has 88,000 miles. I think the cause of this is that I sometimes floor my car to much to gain speeds going on the on ramps plus I like how the torque feels. Maybe this might be the cause. I also know that the transmission fluid is fine I replaced it about 8 months ago. Whats wrong. THANKS FOR YOUR REPLIES.

87300E, take a look at my post, "Diff mounts on 86 300E" below - it may describe your problem as well.

Diff mounts on 86 300E

Regards,
-Nick

I had a problem that sounded similar to yours and changing the transmission mount (it has completely collapsed, that was where the metal to metal sound came from) solved it. You can see it for yourself, look under the car and have someone put it in and out of gear. If it is the mount you will see the trannsmission jump up and down. The mount is inexpensive around $50.00, and easy to change. If you change it yourself make sure to jack the car up securely.
It could also come from the flexdisc (or flexible coupling if you will) on the driveshaft. Also easy to see, go under the car and turn the driveshaft with your hand. Look at the doughtnut shaped rubber mount on the driveshaft (there is two, one at the front and one at the rear). If it is worn you will see. I had it changed as well, it was making the noise similar to what you discribed. Also inexpensive, under $100.00 I beleive. Now I come to think of it it is more likely the flexdisc.
Good luck,

Alex

You said you can hear a metal to metal sound before stopping....

This is exactly what happened to me. Turned out to be the front flex disc. Changed it, now no more metal to metal sound. Have it checked!

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Agron
1989 300E ("E 300"-Badged)
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