W124 E420 several codes on several pins

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W124 E420 several codes on several pins

#22

09-09-2011, 01:07 PM

JimF

'94 S500: only 793 sold!

Join Date: Mar 2001

Location: San Diego, CA

Posts: 1,933

Quote:

Originally Posted by Andras

Bad news: Once the car is warm, with A/C on, placing the transmission in drive or reverse makes the engine idle below 500 rpm, and almost stall. I have to quickly switch to neutral and press the gas pedal to save it. Also, there is a vibration around 1,700 rpm. It seems there is a missing cylinder.

There's an idle compensator which kicks in when A/C is on. Suppose to compensate for the compressor "drag" on the engine. Sounds like that's not working?? Don't know where it is.

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'94 S500 Cpe

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