[W126 Coupe] 1988 560 SEC

[GreyGarageRuss at aol.com]

Thanks to all for your input.  I will try to have it all looked  at:
- Fuel filter
- Ignition module (if I can find a donor car-dealership wants huge  money)
- KE control unit.......can someone explain to me what and where this unit  
is?
Thanks,
Russell
 
re:
typically I would say yes, but turning the car on and off would only  
increase the level of heat and given that solves the problem I'm leaning more  
towards KE..  switching the ignition for on to off resets the  KE,
getting it back in order for a bit. 
My KE was sporadic just as he  described and..
Granted, if FF hasn't been done in the last couple of years  it should be 
just as a matter of course!

Jonathan


On May 18, 2010, at 11:15 AM, mbcoupes-request at mbcoupes.com wrote:

I  am also having a "cutting out" problem. On a 350 mile trip last fall,  
my SEC would lose power after every 1hour and 45 minutes.  I would  have to 
pull over and turn off the motor for a few minutes, then it would  start and 
be good for another 1-3/4 hours and lose power again.  I finally  got to a 
dealer and picked up a new 'fuel relay'.  This got me around  while visiting 
and all the way home again...I thought all was good.   Last week while on a  
2 hour drive, it lost power again at the 1-3/4 time  period.  Could this  
just be a new fuel relay gone bad?  What  other part would "time" itself  
out.  Could the EZL or ignition module  be the culprit.
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