C32 AMG, C55 AMG (W203) 2001 - 2007

Loss of power, coolant pump already replaced.

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Old 04-19-2008, 02:04 PM
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a car that can't do the throttle reset.
Loss of power, coolant pump already replaced.

I am having the same symptoms again... on highway, major loss of power. It comes and goes. I had the same issue several months ago, and it was solved by replacing the "Coolant Pump". Any ideas what the issue could be this time around??? Thanks.
Old 04-19-2008, 02:11 PM
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W211 E55
If it was an OEM pump, then it's probably bad already.

Any codes?
Old 04-19-2008, 02:21 PM
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a car that can't do the throttle reset.
Already bad again??? Can't be!!! Its only been a few months. No codes yet. Will report back from what dealer says.
Old 04-19-2008, 02:40 PM
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you wouldnt be the first one to have the pump fail after a couple of months. The design just isnt up to par.

If it is do yourself a favor and get one of the Johnson pumps from LET.

Old 04-19-2008, 02:59 PM
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I had one fail on me in mere months. Jakpro1 sent me a low-mile pump that I disassembled, and it was on the way out as well - full of black toner-like powder !!!

No codes tells me it's most likely the pump. Get the CM030 pump, and you can tell everyone you're sporting the "big Johnson"
Old 04-20-2008, 12:12 AM
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Originally Posted by loungn14

do yourself a favor and get one of the Johnson pumps from LET.

+ eleventy billion
Old 04-20-2008, 01:06 AM
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a car that can't do the throttle reset.
Originally Posted by loungn14
you wouldnt be the first one to have the pump fail after a couple of months. The design just isnt up to par.

If it is do yourself a favor and get one of the Johnson pumps from LET.

Better life expectancy?

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Old 04-20-2008, 01:07 AM
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a car that can't do the throttle reset.
Originally Posted by ChicagoX
I had one fail on me in mere months. Jakpro1 sent me a low-mile pump that I disassembled, and it was on the way out as well - full of black toner-like powder !!!

No codes tells me it's most likely the pump. Get the CM030 pump, and you can tell everyone you're sporting the "big Johnson"
Damn it. I hate that this is going out again. Thanks for the suggestion. Any chance you got a link where to buy? And DIY?
Old 04-20-2008, 12:37 PM
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2002 C32 AMG silver & 2003 Lancer Evolution 8 black very moded
Originally Posted by ChicagoX
If it was an OEM pump, then it's probably bad already.

Any codes?
i wouldn't say its bad... the C32 has a huge heat issue... that why there are some people on this community who have developed a bigger heat exchanger... to keep the c32 running at peak performance longer... but if your car gets hot... the SC wont kick on to protect the engine
Old 04-20-2008, 12:40 PM
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2002 C32 AMG silver & 2003 Lancer Evolution 8 black very moded
Originally Posted by pointman
Damn it. I hate that this is going out again. Thanks for the suggestion. Any chance you got a link where to buy? And DIY?


DIY thread: https://mbworld.org/forums/c32-amg-c55-amg-w203/206555-replacing-bosch-ic-pump-johnson-c030.html


link to purchase:
http://www.autoperformanceengineering.com/
http://www.letmotorsports.com/c32.as...2&category=all
Old 04-20-2008, 01:03 PM
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Its actually a pretty simple diy, I got one from LET and had it completed within an hour

Old 04-21-2008, 12:03 PM
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a car that can't do the throttle reset.
Originally Posted by edtv82
i wouldn't say its bad... the C32 has a huge heat issue... that why there are some people on this community who have developed a bigger heat exchanger... to keep the c32 running at peak performance longer... but if your car gets hot... the SC wont kick on to protect the engine
Thanks. Its weird cause I have had 20k miles of no issues, and now its starting to go *** up. Even in 100 degree weather never had any issues with the blower not turning on...
Old 04-21-2008, 12:04 PM
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a car that can't do the throttle reset.
I love you, no homo.
Old 04-21-2008, 12:05 PM
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a car that can't do the throttle reset.
Originally Posted by loungn14
Its actually a pretty simple diy, I got one from LET and had it completed within an hour

Nice to know! Thanks. Hopefully I don't mess it up... which is a highly likely thing to happen.

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