CLK W208 supercharger stops working when engine warms up

[angelbenz1]

Hi all, kinda need some help here. I have checked out loads of forums about this problem and when its listed there are no replies. Last time i posted here you lot where great so thanks in advance. My problem is as follows.

1) Car seems alot faster when i start here from cold. When it reaches normal operating temp it kinda feels life less (natuarlly aspirated). I have done the following things.

Cleaned MAF and pipe work as stated on a thread here somwhere
Noticed that with bonnet up supercharger wheel only turns very slowly at 4000rpm when the auto cut kicks in

The breather hose from supercharger to engine was off and cracked changed it but still the same. Could it poss be 1) Secondary air valve? MAF? O2 Sensor? Lambada sensor? vacume hoses?Supercharger clutch/bearing? some type of non return valve blocked? these are all the things that i have found to be related, how do you check each one with out buying the part?


Please guys im really banging my head. Thanks

 

[Adam230K]

Get it on a star machine, but that sounds to me like your MAF is gone.

 

[angelbenz1]

i was hoping a clean would do it, is ther a way to check if its working bfore i fork out ££

 

[flango]

Would agree got all the symptoms of the MAF, you've eliminated the hose which is the other normal problem

 

[BlackC55]

Cleaning the MAF never really works. Get it on a Star first (this will save you money in the long run)