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Old 01-23-2017, 03:41 PM
Join Date: Apr 2012
Posts: 320
Bad throttle body and/or replace/repair?

My 1994 E320 w124 wagon is having these issues: After starting the engine, I am getting low idling so low it kills the engine. Troubleshooting on the DM Self Test Diagnostic Module (16 pin) indicated a code 6 meaning Idle speed control faulty. That is the only code showing using the DM.

When I use the code reader to retrieve the codes on the individual pins, the code reader shown these results:

Pin 6, code 9, SRS malfunction indicator lamp (A1e15) or time limit for DTC readout /erasing e

Pin 8, code 8: Idle speed control (ISC) system at upper or lower control stop or CC or EA indicates "limp home" mode

Pin 8, code 13: O2S (Lambda) control system operating at rich or lean limit

Pin 14, code 2: EA/CC/ISC control module (N4/1) or Safety contact switch (M16/1s1) or Stop lamp switch or Cruise control switch or Actual value potentiometer or Starter lock-out/back-up lamp switch or engine speed signal or vehicle speed signal or closed throttle position switch or safety relay in EA/CC/ISC control module.

In addition, my cruise control does not work, either.

I replaced the brake stop light that goes under the brake pedal with a new one and still have the same issues.

I checked the wire harness with the white pigtail behind the battery and it shows the date with the DELPHI 20.04.05. I assumed the wire harness is good. However, I don't see any pigtail on the throttle body harness. I did noticed the green bar code like label with numbers that are not clearly seen due to age. I am assuming that the throttle body is NON ASR because there is no yellow triangle on in the top middle of the instrument cluster panel. I believe the part number of the throttle body is Throttle Housing with Cruise Control Actuator
Part #: 000-141-57-25- without acceleration skid control (ASR).

I am not sure where to start to resolving these issues mentioned above. Any comments/feedback is greatly appreciated.

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Old 06-12-2019, 12:32 PM
fahrvergnugen's Avatar
Yeah, THAT guy...
Join Date: Jul 2014
Location: Olathe, CO
Posts: 690
For anyone else dealing with this. Restore your appears to rebuild these throttle bodies. Iím having similar trouble with my early Ď96 E320
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Old 06-21-2019, 01:26 PM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,844
Has the engine wiring harness and throttle body wiring been replaced? Many mechanics won't touch this model for driveablility issues unless both have been replaced.

95 E320 Cabriolet, 153K
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