[W126 Coupe] Engine stumbles, antenna chews the antenna mast

[Jay Hirsch]

Just a suggestion...the section  of the mast that is thinnest may be  
slight bent and it getting  "hung  up."
Take a good look at   each section from the  all sides and also from  
the  "top down."
What happens when you raise and lower the mast with the swithch on  
the dash and not in auto mode?
Jay H
On May 10, 2009, at 10:54 AM, Axel Wulff wrote:


> Ian,

>

> I did not do anything to the electronics while removing the old  

> antenna mast and inserting the new one. After it did not want to  

> extend, I simply detached the 6-pin plug on top of the antenna body  

> and reattached it, just to see if I could get it to re-set itself.  

> That didn't work, so I had to pull the mast out again and re-insert  

> it. Now it goes up and down, but does not stop retracting.

>

> I'll take the antenna out to see if I can't figure it out.

>

> Regards,

> Axel J. Wulff

> 610-731-5453 Cellular

> 610-572-4611 Home

>

>

>

>

> From: igunn at bmts.com

> To: mbcoupes at mbcoupes.com

> Date: Sun, 10 May 2009 10:01:20 -0400

> Subject: Re: [W126 Coupe] Engine stumbles, antenna chews the  

> antenna mast

>

> The antenna, I can't remember what's in it, been a while since I  

> had one apart, but there is a switch/switches inside that trigger  

> an open circuit when the antenna reach's its limits open and  

> closed. Some use a small micro switch that gets hit when the reel  

> reach's furthest close and open, the reel carrier has a spring  

> loaded pivot that when the cable is retracted, or extended, it  

> pivots and hits the switch, cutting the power, through a set of  

> small relays.

>

> Was the electrical connection plug and play or did you have to mess  

> with the wiring? Did you connect the antenna wire from the new  

> system? I suggest that you bench the antenna, I'd be surprised if  

> the mast is too short, because it doesn't matter as the cable  

> reach's its limits and ratchets up the reel carrier. Do you have  

> the electrical schematic? It will show you what each one of the  

> wire does.

> ----- Original Message -----

> From: Day . Ralph

> To: Mercedes Coupes Mailing Lists

> Sent: Sunday, May 10, 2009 9:20 AM

> Subject: Re: [W126 Coupe] Engine stumbles, antenna chews the  

> antenna mast

>

> Axel,

>

>

> Sounds like the antenna may be too short.

>

>

> The stumble sounds like what I experienced with both my 84 500SEC  

> and 91 560SEC.  This happened when each of the cars had about 150K  

> miles.  We never found the problem, but suspect the vacuum line to  

> the transmission.

>

>

> Ralph D. Day

>

> Senior Program Manager/ASQ LSS Certified Black Belt

>

> MDA Master Black Belt

>

> Dynamics Research Corporation

>

> (301) 275-9030 (cell)

>

>

> From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes- 

> bounces at mbcoupes.com] On Behalf Of Axel Wulff

> Sent: Saturday, May 09, 2009 9:46 PM

> To: mbcoupes at mbcoupes.com

> Subject: [W126 Coupe] Engine stumbles, antenna chews the antenna mast

>

>

> Hi everyone,

>

> I'm still doing battle with the audio make-over I embarked on about  

> six months ago. It is coming along and I have CD/DVD and iPod sound  

> again for the first time since December.

>

> I changed out the antenna mast with one I picked up at the local  

> (Devon, PA) MB dealership. I got the old one out without a hitch  

> and the new one went in fairly smoothly as well.

>

> The first sign of trouble was that the new mast did not rise after  

> the installation.

>

> I got it to go up and retract, but every time it goes down, the  

> motor continues to spin after the mast is fully retracted and makes  

> an infernal noise spinning against the nylon rope.

>

> Anyone got an idea of what is going on?

>

> Also, my M119 engine has developed a pronounced stumble. I happens  

> when the engine has not fully warmed up and when applying the  

> throttle after idling.

>

> I strongly favor a fuel over spark as the cause, but am open to  

> ideas about what solutions to try.

>

> Regards,

> Axel J. Wulff

> 610-731-5453 Cellular

> 610-572-4611 Home

>

>

>

>

> 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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