NFSCLK

My car just shut down today. When I tried to re-start it sounded like it was out of gas. I was sitting in traffic for a while but the temp didn't go above 190

I have 82k on her and havn't changed the anti frezze yet.
It's all orginal, water pump, thermosat etc. I let it cool down for at least a half an hour maybe a little longer and it started up.

I noticed the temp did climb anytime I stopped. Never above 185.

I thought the anti frezze was supposed to be changed every 100-150K.
I hope I didn't make that up in my head...

Is there an auto shut off when the temp gets to high? That's what it seemed like when I tried to start it.

MarcusF

Coolant is supposed to be changed every third year. Based on your discription, the problem sounds like a bad CPS.

pigman

I just posted a similar story in the CLK 55 forum. Faulty CPS (crank position sensor or is it crankshaft position sensor). Search for pigman's recent posts and the follow-ups for your answer.

NFSCLK

Thanks for the info. That sounds like the problem it wasn't even trying to fire up just cranking away... I didn't get CEL though and it happen twice.

I want to replace it my self, is it a big deal?


What type of coolant would you suggest? I am under the impression CLK's have a special MB coolant, is that right?

MarcusF

The CPS is $55 at autohaus AZ and take 15 minutes if you don't drop the bolt. For coolant, you can either used dealer coolant (MB does not make antifreeze) or Zerex G-05 and distilled water.

NFSCLK

Thanks I ordered a new one.