CLK500 Stalling Problem
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2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
CLK500 Stalling Problem
My daughter asked me for help with her 2004 CLK500, M113 engine, 55,000 miles. The car starts and runs fine, but will intermittently stall when stopped at a stop light. The car restarts on the first try and will not stall again for some time. It is impossible to predict when the stall will occur.
I have had crank position sensor failures on two other MBs with M112 engine variants and one fuel pump failure. Since the car restarts immediately, I think it is unlikely that either of these is the problem.
Can one of the experienced DIYers give me a direction to go? MAF sensor?
I have had crank position sensor failures on two other MBs with M112 engine variants and one fuel pump failure. Since the car restarts immediately, I think it is unlikely that either of these is the problem.
Can one of the experienced DIYers give me a direction to go? MAF sensor?
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From: Boston North Shore
2001 CLK320 Cabrio
I would not rule out the CPS just yet (e.g. very common failure on both the M112/M113).
Mine began failing, at 80,000 miles, with a no start after being parked, until the engine cooled. Also threw a CEL, indicating a CPS fault, which I cleared.
Couple of days later, engine stalled at a traffic light, but was able to quickly restart. The stall, lit up the instrument cluster temporarily, but no CEL thrown.
Since it's only $50 part and a pretty easy DIY (e.g. with a E socket and long extension), didn't wait for a third occurrence and replaced the CPS. No further no starts / stalls since.
Mine began failing, at 80,000 miles, with a no start after being parked, until the engine cooled. Also threw a CEL, indicating a CPS fault, which I cleared.
Couple of days later, engine stalled at a traffic light, but was able to quickly restart. The stall, lit up the instrument cluster temporarily, but no CEL thrown.
Since it's only $50 part and a pretty easy DIY (e.g. with a E socket and long extension), didn't wait for a third occurrence and replaced the CPS. No further no starts / stalls since.
Last edited by Serndipity; Oct 28, 2014 at 07:46 AM.
Thread Starter
MBWorld Fanatic!
Joined: Sep 2013
Posts: 2,384
Likes: 705
2021 GLB250 FWD, 2023 GLA250 FWD, 2013 C250, 2015 GLK350, 2005 ML350SE, 2003 E320
Thanks for the experience, Serndipity. Different failure symptom than I had experienced -- my ML350 and E320 just went stone cold dead when their sensors failed. I'll order the CPS online and change it at my next opportunity.
