[slk0230]

i've noticed lately that there is a metallic sounding rattling noise that occurs just before shifting up (i think it's only before the car is warmed up and running for a little) it sounds like the noise is coming from below my shifter (automatic transmission) does this seem like something i should be worrying about? i'll try to get a video/audio clip of it tomorrow. thanks!

 

[jdc1244]

Worn shifter bushings.

 

[eric242340]

It may be a bad catalitic converter. Does it make this noise whilst the car is in park and rev the engine?

 

[Govert70227]

It may be a bad catalitic converter.

Not on a 1978 300D

 

[eric242340]

Not on a 1978 300D

Sheeesh

 

[mercedesbenz911]

Worn shifter bushings.

+1. New bushings cured the rattling on my old 300D.

 

[webf2010]

I think its the problem with the catalytic converter

 

[mercedesbenz911]

There is no catalytic converter on the diesels.

 

[slk0230]

it doesn't make the noise when idling, even if the engine is revved..it's just a subtle rattling at high rpms just before it shifts up. are shifter bushings an urgent/expensive fix? is it something i can DIY if my brother is a mechanic and could give me a hand?

 

[mercedesbenz911]

All four bushings are only a few dollars, and it's an easy DIY. It's not urgent, just make sure the car engages Park when you put it there.

 

[slk0230]

All four bushings are only a few dollars, and it's an easy DIY. It's not urgent, just make sure the car engages Park when you put it there.

great! thanks for the help. maybe i'll make that a project soon since i have off all week

 

[Rmac58]

I replaced just one, item #11. I did so from under the car.

 

[slk0230]

I replaced just one, item #11. I did so from under the car.

where did you get the part? i found a tutorial in the w123 forums describing how to do it through the ash tray/center console..i think i'll give that a try.

 

[Rmac58]

I searched the epc to find the part number and entered that into Autohausaz.com: Your Parts Search Returned 1 Part(s)
Same with this: Your Parts Search Returned 1 Part(s)
The former, as mentioned, is replaced from under the car, no need to remove anything, just pull the shifter all the way back and inspect. If it's good, then start digging in the console.

 

[slk0230]

I searched the epc to find the part number and entered that into Autohausaz.com: Your Parts Search Returned 1 Part(s)
Same with this: Your Parts Search Returned 1 Part(s)
The former, as mentioned, is replaced from under the car, no need to remove anything, just pull the shifter all the way back and inspect. If it's good, then start digging in the console.

thanks alot for the help! the sound has kind of stopped since i posted this, but i'm sure it'll return, so i'll take care of it then :surrender:

 

[Rmac58]

You're welcome and good luck.