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  #16  
Old 07-10-2009, 12:25 AM
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Location: DOYLESTOWN ,PA, /BROOKLYN,NY
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Engine is 104. Really wanted to avoid replacing parts one by one to get to the problem. Wires cost me $160, coil will be another $60.
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  #17  
Old 07-10-2009, 07:55 AM
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M104? This is a replacement motor? Understand your need to keep from needlessly installing parts, but everything in the ignition system is a maintenance item that you have to expect to replace on some sort of schedule. You don't tell us anything about its maintenance history, so we have to assume that it's just the coil's time to be replaced. Naturally, that's your decision to make, but you shouldn't be puzzled why the motor isn't running smoothly when you can see for yourself that you have arcing ignition components.
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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
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Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

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  #18  
Old 07-10-2009, 08:06 AM
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<<

M104? This is a replacement motor? >>

104.980 ..............Coupe.
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  #19  
Old 07-10-2009, 08:30 AM
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OK, thanks Arthur. Sorry Dmitry. But here's what puzzles me. The EPC indicates that the 124.050 uses the 103.983 motor.
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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't
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  #20  
Old 07-10-2009, 08:37 AM
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Quote:
Originally Posted by Cal Learner View Post
OK, thanks Arthur. Sorry Dmitry. But here's what puzzles me. The EPC indicates that the 124.050 uses the 103.983 motor.

He doesn't have an .050..that is Euro

He has a 124.051...........................104/US
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  #21  
Old 07-10-2009, 08:51 AM
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Yep, sure enough. Starting in MY 1990, the coupe did in fact use the 104 motor, but in '88 and '89, the US version coupe had the 103. In my mind, I was thinking the early coupes. My bad. Well, Dmitry, now that that's all sorted out and you were right all along, it still doesn't change the issue you face with the need to attend to those arcing ignition components.
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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't
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  #22  
Old 07-10-2009, 10:25 AM
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Join Date: May 1999
Location: DOYLESTOWN ,PA, /BROOKLYN,NY
Posts: 205
I am hesitant to sink the money in the car since I almost don't use it now
(no more commute, bought a scion Xb since baby was born, just lost my job).
Going back 3 years ago I wouldn't think twice and replace everything.

In any case, I still love the car and getting the new coil as well. As far as I know it was never replaced before.
I did however replaced the wires and distributor cap 10 years ago.
3 years ago replaced voltage regulator.

I see OVP relay popping up a lot in other discussions related to similar symptoms. Will this be the next step? Also Arthur mentioned a sticking
EGR valve. I think mine is working but pipe is clogged somewhere close to the engine. (tried cleaning it with a guitar string wire but no result)
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White gouges (made my own)
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  #23  
Old 07-10-2009, 01:36 PM
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Join Date: Jan 2004
Location: Jacksonville, FL
Posts: 474
If you start the car once or twice a week only to change sides of the road for street cleaning purposes your plugs are likely fouled. Engines don't like to run for short periods of time with an enriched mixture---very bad. I didn't see in your posts that you have replaced the plugs. Replace them if you haven't already. Mark
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