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  #1  
Old 08-20-2005, 01:16 AM
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Anybody know...

what this thing is for? Just curious.

http://cgi.ebay.com/ebaymotors/MERCEDES-300-TURBO-DIESEL-COMPUTER-W123-85_W0QQcmdZViewItemQQcategoryZ33596QQitemZ7993390695QQrdZ1

Jay.

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  #2  
Old 08-20-2005, 01:23 AM
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Part of the EDS. It takes care of idle stabilization, EGR control, ARV control, etc.

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95 S420
87 300SDL
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  #3  
Old 08-20-2005, 01:25 AM
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Yup, controls those flying saucers over on the passanger side of '85+ vehicles. That box is in the passanger kickpanel near the Alarm and such.
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'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

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  #4  
Old 08-20-2005, 02:03 AM
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So, an '85 300TD would have one of those? Could that be a possible cause of an inop tach on an '85 123?
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'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
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  #5  
Old 08-20-2005, 02:05 AM
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Quote:
Originally Posted by JimmyL
So, an '85 300TD would have one of those? Could that be a possible cause of an inop tach on an '85 123?


If it has those extra units that '84 Federal vehicles don't have... I'm afraid so.

My '85 doesn't have a Tach Amp like older vehicles... I'm not sure how it works. Could be your crank trigger is bad?
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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
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  #6  
Old 08-20-2005, 02:05 AM
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I'm not familiar with the 85 TD but I doubt that box has anything to do with the tach. Check the flywheel sensor near the starter.

Sixto
95 S420
87 300SDL
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  #7  
Old 08-20-2005, 01:12 PM
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That box contains the tach amp for the 85 diesels, it uses the rpm info for driving the flying saucer thingie and the egr.
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  #8  
Old 08-21-2005, 12:53 AM
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Where is that black box located, and how often do these fail? Would it be prudent to get one for a spare if one has an '85? I'm sure they can't come around that often, especially when you need one.
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'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
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  #9  
Old 08-21-2005, 01:14 AM
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Quote:
Originally Posted by JimmyL
Where is that black box located, and how often do these fail? Would it be prudent to get one for a spare if one has an '85? I'm sure they can't come around that often, especially when you need one.


PickNPull off Loop 12 and Davis has a Blue '85 300D w/ Cali Emission next to a ~'72 Benz with an I6. A 280E maybe? It's in the back in the "Misc Euro" section.

They just had a 1/2 Price Weekend, I can almost assure you that piece is still there. I'm going back in a few weeks for some more junk I can grab it then if ya would like me to do so...
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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
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  #10  
Old 08-21-2005, 01:46 AM
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Posts: 9,675
Quote:
Originally Posted by Hit Man X
PickNPull off Loop 12 and Davis has a Blue '85 300D w/ Cali Emission next to a ~'72 Benz with an I6. A 280E maybe? It's in the back in the "Misc Euro" section.

They just had a 1/2 Price Weekend, I can almost assure you that piece is still there. I'm going back in a few weeks for some more junk I can grab it then if ya would like me to do so...
Sounds fine I guess. That isn't just a Cali. thing right? Federal models from '85 have it also?
Maybe we can hook up sometime to hit the PickNPull. I haven't been to the yards in GP in many a year. It was pre-MB for sure.
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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John
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  #11  
Old 08-21-2005, 02:44 PM
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Quote:
Originally Posted by JimmyL
Sounds fine I guess. That isn't just a Cali. thing right? Federal models from '85 have it also?
Maybe we can hook up sometime to hit the PickNPull. I haven't been to the yards in GP in many a year. It was pre-MB for sure.


I think I even have some extra coupon books I can't use, PM me and I'll snail mail one to you if you need to go sooner. Some are: Free Admission, 50% off purchase over $100, $50 off any car, 25% off purchase, etc.



My Fed '85 has that same box in the passanger kickpanel area. That '85 Cali car is equipped very differently than anything I've seen before. But I'm game when the weather cools off, I'm getting tired of going out in this heat!

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.
[/IMG]
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