[W126 Coupe] Transmission Question

[Tracy Walkup]

I am hoping for a simple fix like you suggest with the vac line.   Will 
climb under tonite or tomorrow to ck the vac line.

Thanks for our input.




>From: <mavris2 at comcast.net>
>Reply-To: Mercedes Coupes Mailing Lists <mbcoupes at mbcoupes.com>
>To: "Mercedes Coupes Mailing Lists" <mbcoupes at mbcoupes.com>
>Subject: Re: [W126 Coupe] Transmission Question
>Date: Mon, 31 Jan 2005 16:49:33 -0600
>
>Tracy,
>
>In response to you question I would take a look at possible the vacuum line 
>had popped off the AT Modulator Valve located on the left side of the 
>transmission.  Or the other possibility is the AT Modulator Valve has gone 
>bad.
>If you shifter is really wobbly its like the busing had broke, but the 
>chances of it coming off are near impossible because there is a retainer 
>clip.  So, I don't think that is your problem.     I had something similar 
>on a 420sel.  Its was like diving a stick it would go but the shifting just 
>keep getting progressive worse.  The stealership said I need a new 
>transmission right away due to having 280,000 miles. But it shifted fine 
>and had always been serviced. I just was not buying there answer.   I went 
>on a hunch and took it some where else. I replaced the AT Modulator Valve 
>on the transmission.  That solved the problem in my case.  Its shifts 
>perfectly and the new place said that eventually it would just stop 
>shifting.  So, I don't know but I'd kind of think that may be your problem. 
>  I know there is the valve, O-Ring and rubber cap that all come as an 
>assembly and its rather simple to install.  You need a vacuum gauge to dial 
>it in properly for the shift points but members here on the sight say you 
>can tweak it.  I Installed mined and was not able to tweak it properly. So, 
>I had the new place do it they only charged me 60 bucks.  So, I can't 
>complain.
>
>Jason
>
>----- Original Message ----- From: "Tracy Walkup" <twwalkup at hotmail.com>
>To: <mbcoupes at mbcoupes.com>
>Sent: Monday, January 31, 2005 10:15 AM
>Subject: [Norton AntiSpam] [W126 Coupe] Transmission Question
>
>
>>
>>I finally got my car back on the road after a LONG motor rebuild / 
>>replacement project.  Many posts from the group have been very helpful 
>>over the past few months as I have done the work.
>>
>>The question I have is a transmission question.  I was at speed. 
>>Everything fine.  I then noticed a lack of power.  Gave it gas and 
>>realized then that the engine was fine.  It was as if I had pushed in the 
>>clutch of a manual shift car.  No "connection" to the trans was the 
>>symptom.  There was no noise, no hesitation, no indication of any kind 
>>that there was a problem.
>>
>>Have not got the car to a place where I can get under it yet (that is 
>>another AAA story for later), so I apologize in advance if this problem 
>>turns out to be a simple third grade solution.
>>
>>Fluids all OK.  No apparent leaks.  Engine starts and runs normally.
>>
>>Questions:
>>
>>1.  What electronic control / connections / etc are required.    Fuse? 
>>Plug came out of  trans?
>>2.  If the mechanical shift linkage came off does the trans default to 
>>neutral?  Shift rod off of trans?
>>3.  The cable attached to the throttle linkage at firewall serves what 
>>purpose?  (it is attached)
>>
>>Trans is a fresh rebuild (less than 100 miles)  Car is 1986 560 SEC.
>>
>>Thoughts please?
>>
>>
>>Tracy in Atlanta
>>
>>
>>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.