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Matt
Matt, Mechanical Engineer
Category: Mercedes
Satisfied Customers: 21857
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My 1997 Mercedes has a ticking noise to rear of the car, and

Customer Question

My 1997 Mercedes has a ticking noise to rear of the car, and noise gets louder on acceleration what could it b
Submitted: 2 years ago.
Category: Mercedes
Expert:  Matt replied 2 years ago.
Hello

I'd suspect that the propshaft either has a worn joint or the centre bearing is worn or its out of balance

you can easily check for for any slack in the propshaft joints by twisting either half by hand and feeling for any play as there should be virtually none

the centre bearing is quite loosely mounted so this can be moved normally but if you can run the car in gear with the wheels off the ground and then feel the centre bearing housing for vibration if there's any then consider replacing the unit

and then look along the propshaft for any signs of a missing balance weight as these take the form of little 3/4" squares that are welded onto the shaft - as they are only tacked on they can sometimes come loose and be lost resulting in the shaft being out of balance - if a joint is worn this can also shake them loose

so if a joint is replaced its good practice to have the shaft re-balanced afterwards