Searching....Searching....boost/no boost - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

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#1 Old 02-11-2017
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boost/no boost

I have the intermittent boost issue like many others.
Typical symptom of boost/no boost. The car can be driven and have tons of boost all day, whether I turn off the engine or drive continuously.
Or I can turn it off and have no boost at all after restart.
Or I can have boost and it drops off in stop and go driving.
Or I can have no boost and it suddenly kicks in. [which can be quite interesting on a wet road at 60 mph]

The pump has been upgraded.
The k40 has been replaced.

There is no pattern of malfunction that I can find.

Best info I get from Mercedes is that I need to replace the supercharger, though it acts like the clutch is malfunctioning.

While researching, again on this forum, I found one small blurb about a part with numerous vacuum lines that work with the throttle body butterfly.
If it has a problem, the butterfly does not open properly.

I'd love to try this part, ranging from $27 to $60, [looked up when I initially found the article] before I consider other more pricy options.

For those that would suggest using the search engine, I've used all of the obvious terms and combinations and I've run out of terms to use. So...feel free to throw some other terms out.
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Last edited by silver-slk32; 02-11-2017 at 04:51 PM.
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#2 Old 02-11-2017
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