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  #1  
Old 07-29-2010, 02:44 AM
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Question 300SL & 300CE EZL differences

I noticed many sellers say these are interchangeable so I bought an EZL allegedly from a 92 300SL for my '90 CE and discover the two larger plugs have 4 pins while my CE has 8. Is the EZL not from the correct year or are there differences with the two models? I realize the numbers should match or cross reference but there are so many compatibility lists from sellers and reputable rebuilders and they still aren't comprehensive or consistent. If you know of a correct list per year and model, please let me know...

For those shopping be aware of this difference. If anyone needs the type with the 4 pins, PM me

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300SL & 300CE EZL differences-dscf7431.jpg   300SL & 300CE EZL differences-dscf7433.jpg  
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  #2  
Old 07-29-2010, 04:40 AM
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According to the Mercedes EPC,

010 545 95 32 is for model 129.061 ONLY. (left picture)
It does not cross reference to any other chassis.

008 545 96 32 is for 124.090 (300TE), 124.290 (300TE 4-MATIC), 124.030 (300E), 124.230 (300E 4-MATIC), 126.024 (300SE), 126.025 (300SEL) Only. (right picture)

The reason these two parts are different is the fact that the 129.061 is a m104 based 300SL and the rest of the listed cars are m103 engined.

In fact that might be one of the early m104's that still used the CIS-E system on it.
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82 300SD 145k
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  #3  
Old 07-29-2010, 06:24 AM
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pifcat, the following Part Numbers are all the 8-pin variety from our 1991 and 1992 300CE's:
016 545 04 32 (1991 300CE failed EZL)
012 545 20 32 (1991 300CE replacement)
013 545 83 32 (1992 300CE original)

Our local indie explained to me that routine spark plug, distributor cap, distributor rotor and ignition wire maintenance prevents premature failure of the ignition control module (EZL).

The replacement module was for a 1991 300SL because the MBUSA Parts System showed modules for the 1991 300CE as "backordered".

Per a Beckmann Technologies rep these modules cannot be rebuilt because the internals are covered in epoxy which makes identification of the components impossible.

Be sure there is a coating of heat-conducting paste on the back of the replacement module you install. If not, buy some at Radio Shack and apply it to the back.
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  #4  
Old 07-29-2010, 03:40 PM
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I finally registered for the EPC, that should comprehensively clarify any future purchases. I didn't know you can search a part number and it would give the chassis/model compatibility. Thanks!

This EZL "looked" right because it has 4 plug connections (plus the vacuum) while most standard 300E have 3 connections.

So I've learned:
  • Use the EPC to confirm applications for used EZL's
  • Same year SL EZL's apparently do work for CE
  • Check for 8 pin on the two large plugs
  • Use the thermal paste and maintain the ignition system
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'88 300TE, 175k, black RENNTech 3.6L Recaro C's AMG 1
'92 500E, 110k, Spruce green, stock
'94 E320 Cabriolet, 130k, E500 wheels, Emerald green
'94 E320 Cabriolet, 110k, black, stock, for sale
'88 300TE, 229k, dark grey, for sale
'90 300CE, 212k, white, new paint, for sale
'91 300E, 209k, white, rebuilt head
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  #5  
Old 07-29-2010, 08:36 PM
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You need to be careful with '90 - '91 300CE's

Some came with a M103 engine.
Some came with a M104 engine using CIS.
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  #6  
Old 07-29-2010, 08:52 PM
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Quote:
Originally Posted by Ivanerrol View Post
You need to be careful with '90 - '91 300CE's

Some came with a M103 engine.
Some came with a M104 engine using CIS.
I'm pretty sure 88-89 had standard M103 and 90-92 had the early M104 (CIS and 3.0L)
I'm not sure if the 93 got the 3.2L M104 like the 94 & 95 E320 coupes.
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'88 300TE, 175k, black RENNTech 3.6L Recaro C's AMG 1
'92 500E, 110k, Spruce green, stock
'94 E320 Cabriolet, 130k, E500 wheels, Emerald green
'94 E320 Cabriolet, 110k, black, stock, for sale
'88 300TE, 229k, dark grey, for sale
'90 300CE, 212k, white, new paint, for sale
'91 300E, 209k, white, rebuilt head
'74 914-6, grey, 2.7L 325hp twin turbo Audi conversion
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  #7  
Old 07-30-2010, 05:32 AM
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pifcat2, according to the online parts websites the 1993 300CE had the 3.2 liter engine like the 1994 and 1995 E320 cabriolets/coupes/sedans.
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  #8  
Old 07-31-2010, 01:16 AM
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Quote:
Originally Posted by Ferdman View Post
pifcat2, according to the online parts websites the 1993 300CE had the 3.2 liter engine like the 1994 and 1995 E320 cabriolets/coupes/sedans.
Fred,
I realize the '93 sedans had the 3.2L but not sure about the Coupes. They don't seem to exactly follow the sedan changes...
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'88 300TE, 175k, black RENNTech 3.6L Recaro C's AMG 1
'92 500E, 110k, Spruce green, stock
'94 E320 Cabriolet, 130k, E500 wheels, Emerald green
'94 E320 Cabriolet, 110k, black, stock, for sale
'88 300TE, 229k, dark grey, for sale
'90 300CE, 212k, white, new paint, for sale
'91 300E, 209k, white, rebuilt head
'74 914-6, grey, 2.7L 325hp twin turbo Audi conversion
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  #9  
Old 07-31-2010, 01:25 AM
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According to Auto Haus AZ, 93 300CE:

300CE 124.052 3.2 L6 GAS 104.992
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82 300SD 145k
82 300SD 265k
87 420SEL 230k
89 420SEL 210k
89 560SEL 118k
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  #10  
Old 07-31-2010, 05:55 AM
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O.P. has a '90 300CE. Later specs don't come into it.

From the look of his original post with the two different EZL's one of them looks to be a M103 EZL.

Different countries had different spec cars. You really need the VIN and then go to the Russian parts site to find out your original part number.
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  #11  
Old 07-31-2010, 02:00 PM
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What's the MB part number for the conductive paste on the back of the EZL's??



Michael
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  #12  
Old 07-31-2010, 02:30 PM
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Michael, a few years ago when I needed heat-conducting paste our local MB dealer didn't sell it. The Parts Department rep advised me to buy it at Radio Shack.

A new EZL comes with a coating of heat-conducting paste covered by a thin plastic film so the paste doesn't stick to the inner fender.
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  #13  
Old 07-31-2010, 03:57 PM
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1993 300E 2.8- M104
 
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Quote:
Originally Posted by pifcat2 View Post
I'm pretty sure 88-89 had standard M103 and 90-92 had the early M104 (CIS and 3.0L)
I'm not sure if the 93 got the 3.2L M104 like the 94 & 95 E320 coupes.
My 93 has the 104 2.8 HFM engine similar to the 1994 and 1995 just smaller displacement...1993 was a mess I guess, but i love this engine...
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1993 300E, 2.8 M104 .....
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  #14  
Old 07-31-2010, 04:47 PM
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Quote:
Originally Posted by latief View Post
My 93 has the 104 2.8 HFM engine similar to the 1994 and 1995 just smaller displacement...1993 was a mess I guess, but i love this engine...
1993 was the year when they changed the chassis number to 124.032 and the engine to the 3.2 liter M104.992, which is the same chassis number and engine as 1994 - 1995 cars.

Your 2.8 liter is badged as a 300E 2.8, so at least your badge reflects the engine change.

1993 300E's badged simply as 300E are misleading, since it doesn't reflect the new engine.

They should've badged these as E320 (like '94 and '95), 300E 3.2 (to be consistent with 2.8) or 320E like they did in the rest of the world.
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  #15  
Old 07-31-2010, 08:38 PM
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In our market an early '90's 300E or 300CE came with a M103
A 300e 24v or a 300CE 24v came with the M104 with CIS.

The badges on the rear reflected the differences.

The difference at the dealership was how much you payed for the car. You payed a lot more for an extra 12 valves and extra horsepower.

Of course over the years the M103 has been slightly more reliable

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