Join Date: May 2012
Location: Orange County, CA
Vehicle: 2003 SLK32 AMG
Other Toys: 2011 Ford F350 Dually, Toy Hauler, Can Am quads
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Loss of power issue resolved. Here's the fix.
My '03 SLK32 AMG was losing power and surging. What could be the cause of this, I wondered?
Since I have extended warranty, I took it in to have the ignition key cylinder replaced (very hard to turn the key, sometimes not wanting to turn at all).
Carmax fixed the cylinder and the MB mechs there diagnosed power loss as an intercooler pump failure.
Replaced the pump. Car now wants to leap off the road with power. It's great.
The pump failure meant overheating, and then the supercharger clutch would disengage... really bad for power.
Anyway, if this helps anyone, cool.