[W126 Coupe] Hesitation from 60C to 80C

[FPecar4525 at aol.com]

In a message dated 2/9/2009 3:39:58 P.M. Pacific Standard Time,  RDay at drc.com 
writes:

Kelly, 
Can  you be more specific?  I got rid of my 1984  because of this, bought  a 
1991 five years ago, and am getting rid of it because it has now develop the  
same problem.  The cars are wonderful, but this borders on safety.   I am 
reluctant to sell it to anyone.  My certified Mercedes mechanic  cannot figure it 
out either. 
 
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 Kelly Frink
Sent: Sunday, February 08, 2009 12:54  PM
To: 'Mercedes Coupes Mailing Lists'
Subject: Re: [W126  Coupe] Hesitation from 60C to 80C

Vacuum   
 
From:  mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com] 
On  Behalf Of Matt Jurcich
Sent: Sunday, February 08, 2009 12:41  PM
To: mbcoupes at mbcoupes.com
Subject: [W126 Coupe]  Hesitation from 60C to 80C
Hey all,

My 89 560 SEC (110k or so) runs and shifts  fine from cold until about 60C.  
It starts to hesitate, tranny shifts way  late (it's scary if you're on the 
freeway and can't keep speed!) but then when  the temp gets up to 80C (running 
temp) the power comes back and shifting is  normal.  Car is completely fine 
until it cools off.

I changed the  fuel pressure regulator, had my fuel filters changed at the 
pumps about a year  ago, tranny service a couple of years ago, changed plugs, 
rotor and dist cap  last year.

Any suggestions?  It seems like some temperature sensor  that's flaking  
out......

Thanks.

-m


This link may help.
_http://www.mercedesshop.com/shopforum/showthread.php?t=142395_ 
(http://www.mercedesshop.com/shopforum/showthread.php?t=142395) 
 
Frank Pecarich
**************The year's hottest artists on the red carpet at the Grammy 
Awards.  AOL Music takes you there. 
(http://music.aol.com/grammys?ncid=emlcntusmusi00000002)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/mbcoupes/attachments/20090209/88a20949/attachment.htm>