Supercharger only works when engine cold

[angelbenz1]

CLK W208 Supercharger only seems to work when engine cold!!please help

Hi all, i hope some one can help. I have a 1999 CLK230 and ive noticed the supercharger only works when the engine is cold. When it reaches normal Temp the car is sluggish. Could it be the small pipe about(9mm) that goes from the komprssor the the small air pipe (part no: a1110181682) Any ideas would be great. Thanks in advance

 

[jamesmc]

I have the same unit fitted to my car.

Are you sure that it is not kicking in at all?

From memory, someone will correct me if I am wrong:
With the engine warm at tick over open the bonnet and look at the electro magnetic clutch/pulley fitted to the end of the supercharger unit.
Rev the engine up a little and you will most likely hear an audible 'click' as the electro magnetic clutch kicks in and starts driving the supercharger/kompressor. You should see it suddenly start to drive the unit also.
If that is the case you probably need to look elsewhere for the problem.

What mileage has the car done?
Any signs of any oil seeping out around the MAF housing?
MAF is located vertically on the pipework coming up from the intercooler, to the right of the radiator (looking from the front of the car).
It has plug in wire cable attached to it along with a couple of clips that hold it in place.

 

[bigmacplease]

Do you have a picture of the part you mean jamesmc? Might have a look on mine to see if that happens just out of interest

 

[jamesmc]

Do you have a picture of the part you mean jamesmc? Might have a look on mine to see if that happens just out of interest

In the image below you will see a black pulley. Normally on tick over this will spin but the electro magnetic clutch will be disengaged so the supercharger will be inactive. Once you raise the revs a bit you should hear an audible click as the clutch engages and starts to spin the supercharger drive shaft. I am away and doing this from memory so can't quite at which RPM this should happen. Give it a go anyway and all should become clear.

BTW, from the front of the car you are looking for the Kompressor located directly to the left of the engine above the exhaust manifold and to the right of the air filter box. It's the only item that has a drive belt leading to it high up on that side of the engine.

Anyone see any errors, or can offer any pointers, feel free to do so. Like I said it's from memory.. my car is in Portugal and I am in Indonesia so can't pop out and check it right now

 

[BigDusty]

I have a kompressor (supercharger) on my car, should be similar to yours and and have had all sorts of problems with it working.

Normally (and in my case) there is nothing wrong with the actual kompressor or the magnetic clutch when it stops working, it's usually a fault that will upset the whole of the system triggering the ECU to put the car into limp home mode and the kompressor is the first thing the ECU will shut down.

At the moment my kompressor won't work so I had the car tested for faults and it came up as the lambda sensor being faulty, I have one on order and should arrive on Tuesday so I will report back if I am successful or not.

I'm not saying that your problem is the Lambda sensor, it could be a manner of things from faulty recirculation flap to a dirty air mass sensor. The best thing to do first is to get the car diagnosed for faults.

One advantage about the kompressor apart from making the car go faster is that with me when ever it stops working it tells me that there is something else wrong with the car as the ECU light has never come on even though my lambda sensor has blown.

BigD

 

[angelbenz1]

hi all and thanks for respnses i will look at it tomorrow and get back. the car is def more faster when engine cold i can say ive heard a click.

 

[BigDusty]

OK, Got the new Lambda sensor on Friday, fitted it today and now the car and the Kompressor is working fine.:bannana:

I had problems with the Kompressor not working a few years ago turned out to be a faulty purge valve and a blocked carbon canister/filter. This fault had upset the emissions and again the ECU put the car into limp home mode thus shutting off the Kompressor.

It just proves that when something, however big or small goes wrong or malfunctions it can have a severe knock on effect.

BigD

 

[milo16d]

read errors from ecu... prob. super charger too hot , then ecu stops super charger... find fault.. cooling or sensor. check codes then u will see what is going on

 

[Dragon]

OK, Got the new Lambda sensor on Friday, fitted it today and now the car and the Kompressor is working fine.:bannana:

I had problems with the Kompressor not working a few years ago turned out to be a faulty purge valve and a blocked carbon canister/filter. This fault had upset the emissions and again the ECU put the car into limp home mode thus shutting off the Kompressor.

It just proves that when something, however big or small goes wrong or malfunctions it can have a severe knock on effect.

BigD

Did your engine symbol light on?

Mine does on the R170 and Basingstoke MB changed the canister/filter for £260.

To avoid a repeat, I went to look for the canister/filter in my 1997 W202, it hasn't got one.

 

[BigDusty]

Did your engine symbol light on?

Mine does on the R170 and Basingstoke MB changed the canister/filter for £260.

To avoid a repeat, I went to look for the canister/filter in my 1997 W202, it hasn't got one.

That's the strange thing, my warning light didn't come on with either problems. I can unplug my air mass sensor and my Lambda sensor and still no light.

FYI, my carbon canister/Filter is up in the near side rear wheel arch above the plastic wheel arch cover.

BigD