E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

1995 E320 wiring

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Old Nov 18, 2012 | 06:24 PM
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95 e320 cabrio, 89 420 sel, 91 300e
1995 E320 wiring

I had the dreaded wiring harness go bad on me.
I have it replaced, but the engine still stalls after coldstart within a minute or so.
I expect that the ECU might be failing or has failed due to wiring shorts.
Now: Can it be repaired?

I do have an ECU for a '93 2.8l eng from the junkyard. Could I run this one in my 3.2?
Might not be perfect but could I even try?

I think I have to rewire the trottle body actuator yet.
I hope someone can answer me soon. Thanks.
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Old Nov 23, 2012 | 11:21 AM
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E320 HFM

Check OVP relay part#.
Also, check codes @ pin 8 & 14
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Old Nov 25, 2012 | 10:14 AM
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95 e320 cabrio, 89 420 sel, 91 300e
Thanks, could you tell me how I can chech the codes?
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Old Nov 25, 2012 | 10:36 AM
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You build a little LED tool.

Simple, cheap device.

http://www.peachparts.com/shopforum/...-pin-14-a.html

Make the tool and I will run you thru the process.
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Old Nov 25, 2012 | 11:08 AM
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95 e320 cabrio, 89 420 sel, 91 300e
Arthur, mine has a push button and led build in . do I just need a jumper wire then?
Attached Thumbnails 1995 E320 wiring-dsc06621.jpg  

Last edited by mygr8star; Nov 25, 2012 at 11:19 AM. Reason: add pic
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Old Nov 25, 2012 | 11:18 AM
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The built-in LED/SW will only address Emmisions fault codes stored in the N/59 DM.
[CE lamp activation module]

You want to get to the actual Engine Management/ HFM/SFI and EA/CC control modules.

That takes the tool and a different pin to activate the retrieve flash code format.

Here are those codes

http://www.autolib.diakom.ru/CARS2/p.../cs1000_mb.pdf
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Old Nov 25, 2012 | 11:22 AM
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95 e320 cabrio, 89 420 sel, 91 300e
Ok, thanks. I'll whip something up and will be back for more advice.
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