How to rewire an M104 Throttle Actuator - Page 3 - Mercedes-Benz Forum
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#21 (permalink) Old 05-15-2010, 06:46 PM
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hi

may i know what does the throttle do?is it for cruise control..may i knw if it has smthing to do with the brake/

108 body 280 se
123 body 200g
124 body 260e
126 body 300sd
140 body s280
123 body 230c 2 door
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#22 (permalink) Old 05-25-2010, 03:14 PM
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Smile

Saved me much time in replacing the ETA with a rebuilt actuator; thank you for your thoughtful writeup. Using any spray can in the ETA boot to wiggle it free works like a charm!
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#23 (permalink) Old 05-25-2010, 10:15 PM
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Oh btw I dont have a check engine light, according to my owners manual it wasnt required because it is not a CA compliant car and is a region option. Found out after looking into it for days.
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#24 (permalink) Old 07-08-2010, 10:10 PM
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How on EARTH is this not a sticky!

Fantastic job on giving back to the community. I am halfway done with mine, figured 16 gauge is too thick a wire. Will pick up some 20 gauge tomorrow and finish the job.

Need to sticky this ASAP!

All of this is 100% applicable to the 1995-1997 C36 AMG models as well as the early C280.

EDIT: Symptoms for me included cruise control that would only work for a mile and then shut off, taking the gas pedal with it. What happened is the actuator motor +12V touch the magnetic clutch ground and killed the magnetic clutch entirely.

Easy test is to check the CC/ISC/ASR computer connector #1. For me, multiple contacts indicated a short. Best tested right aftet you stop the car and everything is still hot.



Repairs + Maintenance:
Maxed out my character limit while trying to list everything. FML.


Attention all W202 - M104 owners:
Bad tansmission shifts & jittery cruise control
Recurring code P0327 and poor performance
Cruise Control Popping
DIY Door Actuator Fix

Last edited by jumph4x; 07-08-2010 at 10:14 PM.
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#25 (permalink) Old 07-09-2010, 12:13 AM
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As per post #14, it's been a sticky for some time.
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#26 (permalink) Old 07-09-2010, 05:00 AM
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Quote:
Originally Posted by Zeitgeist View Post
As per post #14, it's been a sticky for some time.
I see.

I use MBWorld mostly. Contacted the OP to see if I can repost all of this on there. Such valuable info.



Repairs + Maintenance:
Maxed out my character limit while trying to list everything. FML.


Attention all W202 - M104 owners:
Bad tansmission shifts & jittery cruise control
Recurring code P0327 and poor performance
Cruise Control Popping
DIY Door Actuator Fix
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#27 (permalink) Old 10-14-2010, 05:57 AM
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Throttle acuator rewiring

Thanks to all for the information on this project. I had a 1500 rpm limit on my 1995 c280 that came out of the blue while cruising on the highway. After inspecting inside my loom to the throttle, it was apparent that these wires had to be replaced. Here are a few observations to help the next person: When removing the pin retainer, I had trouble getting it out even after the retaining tabs were cut. Against my better judgment, I firmly grabbed all the wires and slowly pulled out the carrier. It was a last resort and worked fine. Also, in the pdf it was recommended to use 18, 20, and 22 gauge wire. I believe that 16, 18, and 20 are the correct gauges although this does present problems when pushing the wires back where they belong. To remedy this I has to enlage the holes at either end. Otherwise it was straightforward. One more recommendation...make sure you make your new loom long enough! I thought mine had plenty of slack but it barely fit around the throttle opening. Hope this helps.
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#28 (permalink) Old 11-15-2010, 04:34 PM
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Boy, this is a great post. Still being used 4 years later! Many thanks to Greg for writing up the PDF, great job! Repairing mine on my 93 300CE tomorrow.
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#29 (permalink) Old 02-05-2011, 08:04 AM
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Very good write-up about this common problem.





Here is my rebuild, i actually replaced the orange cable with an 40 pin parallel floppy drive cable (because i had one, and it was rated at 110° c so it will survive. But i was doing some finishing touches and cut one soldering on the black carbon board and broke one connector.
Do you know if anybody makes those or if i can buy one ??
I emailed RUF (which is the name of the company) and they told me because of contracts they are not allowed to sell me spares directly, Mercedes will ofcourse only sell the full unit. And yes...i have tryed to shave of the green surface and tried to solder the cable directly to the "track" of something else than coppar, it will not stick!

Here is a photo of what component i need.

Hlynur - From Iceland
E420 sportline - partly AMG looks.
http://www.simnet.is/hlynzi
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#30 (permalink) Old 02-07-2011, 08:55 AM
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(Thread Starter)
have you tried to attach a small section of copper wire to rebuild the pin and connect this pin electrically to the trace using a silver filled adhesive? I repaired a flex circuit on an old pen plotter in this manner once.

I don't believe that these parts are available. I tried to get a replacement to remove the pitting in the potentimeter traces when I rewired my actuator but was unable to locate a source.

Greg

Last edited by GDC; 02-07-2011 at 08:58 AM. Reason: additional info
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