[W126 Coupe] 1985 500 SeC

[Jonathan]

Hello Axel,
Sorry I missed your call yesterday, for what ever reason my phone never 
even rang.

That aside, if I understood you correctly your OVP is only blowing fuses 
when you run the AC??

If so then I don't Think your OVP is bad, but if it keeps popping w/o 
the above then yes I'd wager it's shot.

Give me a ring again today @ your convenience and we'll chat some about it.

Best Regards
Jonathan


Axel Wulff wrote:

> Rick,

>

> Did you try changing the Monovalve?

>

> It sits above the auxiliary water pump you mentioned you have checked out.

>

> Otherwise, I'd suspect the fan that pulls air in from the compartment may be 

> malfunctioning. The inlet for this fan is next to the rearview mirror. Put 

> the heater to defrost and with a light piece of foil or paper, try to see if 

> there is any suctions there.

>

> If this fan is malfunctioning, the ACC unit will measure the temp of the air 

> in the dash and will "think" the car is nice and toasty.

>

>

>

> Regards,

> Axel J. Wulff

> 610-731-5453 Cellular

> 610-572-4611 Home

>

>

>

>

>

>   

>> From: WRick11499 at aol.com

>> Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>

>> To: mbcoupes at mbcoupes.com

>> Subject: [W126 Coupe] 1985  500 SeC

>> Date: Sun, 18 Feb 2007 13:41:24 EST

>>

>> Its cold here in MD. and my heater is acting crazy. Some times works and

>> sometimes not.I bought a rebuilt  climite control unit and it does the  

>> same

>> thing.Some times the defroster blows hot and the center vents blows cold  

>> and

>> sometimes every thing works alright but most of the time   all  blow 

>> cold.The

>> small pump on the firewall seems to be working plus I bought  a newOverload

>> relay.If I disconect  a battery cable and then replace  it, itseems to be 

>> O.K. till

>> I turn the key off, so I think it must be  electrical, are there other 

>> relays

>> that I should check and where are they  located in the fuse box, has anyone

>> else had a problem like this.Thanks for  any help    Rick

>>     

>

>

>   

>> The MB Coupes Website!

>> W126 SEC Mailing List

>> Postings remain property of MB Coupes, L.L.C.

>>     

>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>

>   



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1996 S600 Euro "Scharnhorst"
1991 560 SEC Full Euro ECE
1991 560 SEC 226Hp/271ft/lbs
1989 560 SEC AMG (N.A. Conversion 250/297)
1987 560 SEC 
1986 560 SEL 6.0L 32V AMG
1985 300 CD (for sale)
1980 280 SE Euro
1986 560 SEC (parts)

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