I’m just chapped over the fact that a $1000 part can sideline this car, not to 
mention there is no guarantee that this is the issue.  Everything in the DAS 
says it is, as I‘ve eliminated the only other possibility, a bad coil.

Car was parked (literally) on the waterfront in St. Pete for about 10 days. 
During this time we had at least 10-15 inches of rain as well.  Son gets back, 
starts car up, it idles poorly and has no power.  Idle smooths out, but he can 
still barely get it to move until it gets up to about 25-30 MPH.  He gets it on 
the interstate and drives it home without a hitch - except that it has no power 
to speak of below 25-30 MPH.

I look into it and make sure the distributor caps and rotors are clean and dry, 
which is a known issue for these cars when in damp locations.  I found some 
burn spots on plug wires (the original wires) so I order a new set of Berus for 
it.

Install new wires.  Still has no power at low speed.  Slap the DAS on it and 
find out the left side distributor isn’t firing, at least all of the cylinders 
connected to it aren’t.

Check the coil.  Checks good, but I have spares from the S500 coupe. Try one of 
those.  No change.  Swap coils, no change.

Only thing left and the only other error reported by the DAS is the EZL 
(ignition module).  I also check out all the wiring between the EZL and coil. 
Checks out fine.

So at this point I’m being told by the diagnostic software that it’s the coil 
primary or the EZL. Since the coil checks out and everything to it, the only 
thing left is the EZL.

My mailman is driving by as I type this, so it’s here.  I’ll be installing it 
tonight and will report back.

I would add that I talked to my 3rd generation indie last week about this, and 
he gave me some direction on the DAS and how to follow things through.  He 
didn’t want to look at it until I had exhausted all of the DAS possibilities, 
which was really nice of him.  He spent a good 10-15 minutes with me going over 
the different screens and what I should look for.

Grrr.


> On Aug 27, 2016, at 2:55 PM, Curley McLain via Mercedes 
> <mercedes@okiebenz.com> wrote:
> 
> 
> 
> Dan Penoff via Mercedes wrote:
>> I don’t want a W140 anything.  I am so p*ssed over the inability to control 
>> or even marginally bypass the systems in this thing I’m done with it. While 
>> I have learned a significant amount with the really in depth use of the 
>> DAS/HHT, I am so frustrated by the complexity of the systems that it’s just 
>> not worth the headache when something goes wrong.
> 
> Which is EXACTLY WHY used MBs, no longer have a great resale value, even 
> Diesels!
> 
> They end up in an auction, go through a series of short term owners, then get 
> crushed because the electronic crap is not worth fixing.  Even the 87 to 93 
> wiring harnesses lard to premature crushing of lots of cars and was the start 
> of the ruin of resale values.
> 
> People will spend thousands on their hondog or toada to buy overpriced parts 
> once or twice in a couple hundred K miles, but they refuse to maintain an MB.
> 
> Back in the 70s, ANY MB diesel that ran brought $5000 or more!  (unless it 
> was a rust bucket)  Even onces so rusted there was little usable but the 
> drive train brought $1000 up!
> 
> 
> _______________________________________
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