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  #1  
Old 01-24-2006, 10:39 AM
babymog's Avatar
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Join Date: Jan 2006
Location: Northeast Indiana
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Auxiliary Water Pump

Does my '87 190DT have one? If so, where? I have a toasted controller, would like to find the short/source.

- Jeff Miller
'87 190DT

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  #2  
Old 01-24-2006, 10:56 AM
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Join Date: May 2002
Location: Blue Point, NY
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Don't know the vehicle well enough, but, I share the pain.

My pump seized and it took out the CCU. I'd bet that you have the same problem.
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  #3  
Old 01-24-2006, 11:12 AM
LarryBible
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I expect that you will find it on the passenger side wheel well. When you find it, rig up some jumpers and an ammeter. Jump power to the aux pump through the seriesed ammeter. If it draws more than 1.3 Amps replace it. It will INDEED fry the CCU.

Good luck,
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  #4  
Old 01-24-2006, 11:40 AM
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Found it, right behind the cam cover on the firewall. I suspect you are right, I found the problem by installing a new controller and having it trip on/off, removed it and will re-install after I check the pump.

Thanks,

- Jeff Miller
'87 190DT
''91 300TE 4matic (sold)
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  #5  
Old 01-24-2006, 01:25 PM
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sorry, but what do you mean by CCU?
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  #6  
Old 01-24-2006, 01:36 PM
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Climate Control Unit.

- Jeff Miller
'87 190DT
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  #7  
Old 01-25-2006, 05:06 AM
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Join Date: Mar 2005
Posts: 182
ah okay, thanks!

No worries for me then, since here in the Netherlands a 80's or 90's Merc with AC is a needle in a haystack.

I for sure havent got one, and i have 5 benzes

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