w201amg

hiiiiiiiiiii every body h r u ? im new in this fourm and i have aproblem with my w202 c240 sport while im driving the car i heard astrong sound comes from underneath ,stop driving the sond stil there ,put the geare on N the sond still
and the gear on P the sound still there but on D or R NO SOUND . COULD SOME BODY HAVE AN IDEA? THANK U ALL.

Plutoe

Could be loads of things---why not put the car on a lift and look and listen to localize the sound!!

w201amg

Thanks for your reply. I lift the car and try to locate the sound it's between the engine and transmtion I guess maybe in the torque converter or in the transmission.

Plutoe

Now comes the fun part---check the fluid level and also take a very small sample, rub some on your fingers and smell the fluid----what does it smell like!!

w201amg

thank u again for Ur reply ,i changed the fluid and the filter 5000 miles ago it was dirty and black now i checked the fluid level its OK but still dirty black.after 5000 mil besoms black why?the fluid type is TITAN ATF 4143 .and when put the gear on N or P and increase the idle the sound increase to .when put on D OR R the sound diaper unless u drive the car then the sound increase with the speed increase and the shifting is smooth and grate.and sorry about the language.

Plutoe

Remember the color of the fluid is not an issue. The issues are smells, such as burnt and large metal parts(sand consistancy) in the pan bottom---never the less you may be having problems with the torque converter---that is not a DIY!