My c230 Mercedes Kompressor is making a whinning noise. I just put in a new radiator because the radiator was leaking fluid on the transmission. I got the transmission drained and cleaned, the noise s

Its a very good possibility!

not necessarily
when diesels knock and diesel at low rpms it generally indicates a dribbling or leaking injector/s
have an accredited diesel repair shop check it out
If it has some miles on it and the injectors have never been done then the injectors are a fair bet

could be your flex disk need changing

Does it have a motor oil cooler cooled by motor coolant that could have possibly leaked thru? Transmission fluid cooler?
Was there tell tale on the replaced head gasket indicating a leak?
Condition of a replacement head is important, with no warps, cracks.

Faulty transmission or drive shaft maybe? either you've hit something like a curb or speed bump or its just loose.

hi,better to put your car in a car lifter,to determine the noise,if you suspected that your trans. create the noise,remove your trans. oil pan,now you can see,if there is a metal chip or like a fine dust, or quality of oil, mechanical parts are maybe defect,better to consult or evaluate your trans.by your dealer,ty

the transmission on your MB is sealed with no way to check the trans fluid level,(no dipstick provided for) that is why the report says "sealed". MB did this to stop customers from overfilling there transmissions, which can cause severe damage if not done properly at the correct fluid temp, this requires special test scan tools.

this should work straight away, but i would first put the key in the ignition, and put the ignition on for 30 seconds to a minute, then start it up

hi, mercedes are good for 200,000 before you change transmission oil, hope this helps my E300 has done 350,000 and still changes fine as the oil is not a lubricant as such it lasts longer and does not lose it's viscosity, hope this helps you, thanks for useing fixya

what fluid did you want to check? oil, coolant, transmission, brake? let me know and maybe i can help. the leak you currently see what color is the fluid? black or dark brown probably enigne oil. red or dark brown probably some kind of hydraulic fluid--trans or brake, yellow, green or blue with a sickly sweet smell is probably coolant. i haven't worked on a c230 but as far as i know all transmissions have a dipstick where you can check the level. check your owner's manual. make sure the car is warmed up such as after a short drive to properly circulate and check the trans fluid. some cars also require the transmission to be placed in a specific position ie neutral when being checked. again check your owners manual.

to the guy that was critical about your question, i hope he stays as dumb and ignorant about his/her car as he seems as with his/her attitude--just keep bringing it to servcie, that way i can keep making a lot of money out of you. i actually prefer an owner who knows a litlte some thing about their car and how it works--it makes the job easier in communicating to me what may be wrong and thus i can save them time and money. we both win. just don't tell me what you think it is--just tell me the symptoms are, as a professional it's my job to figure it out from there. hope this helps.