2003 C320, Engine Help! - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 03-11-2011, 09:32 AM Thread Starter
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Vehicle: 2003 C320 Sport Coupe
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Unhappy 2003 C320, Engine Help!

I was sitting at a red light this morning and my engine turned off. All the dash lights went on (every possible notification flashed up) and turned off, and the gas gauge went to empty. The notification screen was still on so I know the electricity was working in it still. I turned on my emergency blinkers (thankfully only one person was behind me) and tried to restart it. It only restarted after I put it in park and took out the key and let it rest a few seconds. What the heck happened!? [I'm due for a service B in 5700 miles, have 3/4 tank of gas in the tank.] Thanks in advance.
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post #2 of 4 (permalink) Old 03-11-2011, 09:42 AM
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Many people said that was the symptom of the CPS (crankshaft position sensor) going bad.
About $40 part and an E8 torx socket will fix the problem if it's the CPS.
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post #3 of 4 (permalink) Old 03-11-2011, 10:39 AM
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Is there a CEL? Alot of times if the crankshaft position sensor has an issue the CEL will illuminate.
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post #4 of 4 (permalink) Old 03-19-2011, 06:24 AM Thread Starter
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Crankshaft Position Sensor

Yeah I think it was the cps. My dad hooked up a code reader of his and it gave him error 0335, which is the cps, after some internet research. I got three quotes to fix it--almost all $350 ($140 for the part alone). I ended up getting a new Bosch one for a third of the price after some shopping around. Made me a little sick to my stomach, how high the markup on some of this stuff is...
After reading more than a few forums that said it could be installed 'easily in fifteen minutes,' we tried to install it ourselves, but the bell housing is so narrow around the engine, only my small hand could get in there to try and unscrew it. It's pretty much inaccessible, so I'm going to take it somewhere where they can handle it without breaking anything or losing pieces down in the engine. Incidentally, now after putting it back together, the check engine light comes on when I started it to move it, but maybe that's the car finally realizing that something's wrong. Hopefully that's all they find.
Thanks for your advice, you guys were on the money!

Last edited by Betty_C320; 03-19-2011 at 06:26 AM. Reason: added info
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