CPS failure?
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Senior Member
Joined: May 2010
Posts: 380
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From: Seattle, Warshington
2005 C55, 2006 Ram 2500 MegaCab diesel, sold 2001 Dodge 2500 Cummins, sold 87 190e-16v, sold 97 e420
CPS failure?
So our car died yesterday just as the wife pulled in the gas station. Had to have it towed to MB dealer and they said the crank shaft position sensor failed. No check engine light but I did have a rough idle and random or lower shift points for the last 5K. The car has only 38K on it, I also had one fail on my E420. Has anyone else had this problem?
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Joined: Jul 2003
Posts: 1,687
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From: Western Canada
2013 C63 AMG P31, 2014 GMC Sierra (6.2)
I've been fortunate enough not to encounter this yet. I'm pretty sure this has happened to a few C55/W203 owners on here. Certainly not a comfortable thought knowing that this occurred without warning and left you stranded. I wonder if some preventative maintenance (like the voltage regulator issue) can be performed?
Last edited by wawy; Jun 28, 2012 at 08:09 PM.
Super Moderator Alumni
Joined: May 2006
Posts: 4,539
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From: Southern Cal
a C32 AMG & S-Works Tarmac
So our car died yesterday just as the wife pulled in the gas station. Had to have it towed to MB dealer and they said the crank shaft position sensor failed. No check engine light but I did have a rough idle and random or lower shift points for the last 5K. The car has only 38K on it, I also had one fail on my E420. Has anyone else had this problem?
It happened to me about 6 months ago. I bought the part for $50, online, and found a mechanic friend that installed it for $100. It's certainly not rocket science but, on the C32 that bugger is nearly impossible to get to. After watching the contortions and wrangling it took to reach it, I realized it was the best $100 I've spent on that car.
If you search it, you should find dozens of threads on this subject.
Member
Joined: Sep 2011
Posts: 167
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From: Hong Kong, China
2002 W203 C32 AMG / 1997 Toyota Corolla AE110
As I know CPS always die 'suddenly', no symptom before, engine just stall.
And it is heat related items, engine stall after heated up, and can start again after cooled. It is a cheap parts and just 1 screws to mount, but quite hard to replace as its location in the engine is very bad and hard to reach......
And it is heat related items, engine stall after heated up, and can start again after cooled. It is a cheap parts and just 1 screws to mount, but quite hard to replace as its location in the engine is very bad and hard to reach......
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Member
Joined: May 2012
Posts: 112
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From: Virginia
05 C55
Yup, I have not done it on a C32, but on my C55, it is really difficult to figure out at first since you are doing it without laying eyes on it. However, if you look and feel the part you ordered you can figure it out. Its on the very backside of the engine towards the firewall on the drivers side.
Damian
Damian
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Super Member
Joined: Aug 2006
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From: san jose, ca
2002 C32 1987 190E 2.3 334K miles and going
Keeping a spare is REALLY a good idea. But if, you're stuck, let the engine cool down and you could still drive home or to your mechanic. Once you kill the engine, you'll have to do the same cool down again.
