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Old 03-24-2008, 10:07 AM
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W210 stalling when warm, restarts after 10 minutes.

Hi all.
My 2000 E320, with 55K miles, has developed a curious problem.
It had stalled on me twice today when coming to a stop. I was able to restart it and drive away after about 10 minutes. After the second stall I got on the highway and drove it for about 30 minutes without any problems. When it stalled the first time I checked the fuel pressure and there was no fuel coming from the valve at the end of the fuel line. I also checked for spark and I didn't seem to hear/see any spark when I pulled off the boot and inserted a screwdriver grounding it against the block. After the second stall I didn't immediately checked the pressure, I tried to start it a few times, waited about 10 minutes and then checked the pressure. This time there was pressure and car started right away.

I did search and found that most people seem to have a problem with the flywheel sensor. Is there a way to test the sensor or should I just replace it as it is not too expensive?
Also, would the lack of fuel pressure after the first stall indicate a faulty fuel pressure regulator / fuel pump / fuel pump relay? If so where is it (the regulator and the relay) and how can I test it/them? The fuel filter may have never been changed on the car. This is the first time I use a different brand of gasoline in the car, might be just a coincidence, or could the attendant have put in lower octane which would cause the knock sensor retard the ignition to the max and hence stall the engine?

Thank you for your help.

Alex


Last edited by dacia; 03-24-2008 at 10:23 AM.
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  #2  
Old 03-24-2008, 11:11 AM
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Sure sounds like a classic case of Crankshaft Position Sensor.
http://catalog.worldpac.com/mercedesshop/sophio/quote.jsp?clientid=catalog.mercedesshop&cookieid=1XC0ZKQX92BW0NRV3A&baseurl=http://catalog.peachparts.com/&partner=mercedesshop&year=2000&product=F6010-100664&application=000449197
No, you can not check the sensor, unless you have testing equipment WAY beyond what you would find in the toolbox of the average person.
A low octane fuel would not cause any of your described symptoms.
A little less power maybe, but not an outright stalling.
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Old 03-24-2008, 07:53 PM
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Thanks for the reply.
I will replace the crank sensor, probably today, and go from there. After reading up a bit it looks like that is where the problem is.
Thanks for dickiegoodman for the DIY article (with pictures no less).
Good man indeed.

Alex
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Old 03-26-2008, 07:36 AM
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Just an update for future searchers, it was the CPS (crankshaft position sensor).
It got progressively worse though, last night I had to wait up to 40 minutes before I could restart it, blocking rush our traffic for miles.
Original part number: 003-153-2728, new part number (on the sensor I put in): 003-153-2828. Thanks for dickiegoodman for the writeup. Now that I know where it is and know how to access it, it would probably take me 15 minutes to change it. The dealership quoted me 1.5 hours labor. Disgusting.
It is an easy do it yourselfer (at least on a 2000 E320 it is) and I didn't have the torx socket, I used a regular one, not recommended though.


Alex
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Old 03-27-2008, 09:05 AM
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this CPS thing is so prevalent that I just bought one and tossed it on the shelf,
since it's just a matter of 'when.' haven't quite done the same for window
regulator yet.

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