Lost power/boost - Mercedes-Benz Forum
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post #1 of 2 (permalink) Old 03-07-2019, 01:10 PM Thread Starter
BenzWorld Newbie
Date registered: Mar 2019
Vehicle: 2008 R320 CDI
Location: Toronto
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(Thread Starter)
Lost power/boost

Would like to know if someone experience similar situation or can tell where to start diagnostics. Have my 98 R320CDI only for few months and kind of like it )
Car starts and idle fine when on Parking and accelerator is press rpm goes up no problem but when driving does not want to downshift gears stays less then 2000rpm and it takes a while to get to the speed (80km)
when I use paddle shifters there is no problem with shifting or RPM.
Engine light on
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post #2 of 2 (permalink) Old 05-18-2019, 07:24 PM
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Date registered: May 2019
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Almost same problem here

I had to replace the diesel particulate filter (the main catalytic converter that's visible). It was breaking up inside. I found a replacement on Ebay. But the main problem came from an exhaust port that was directly in front of the tension pulley. Somehow the tension pulley made a whole in that port and was losing air/boost/pressure. My expected $3,000 job turned into around $1100, which included labor.
Mike Mosley is offline  
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