97 MERCEDES S420 ENGINE STALLING AT IDLE

  • Tiny
  • svcampbell
  • 1997 Mercedes Benz S420
  • V8
  • 2WD
  • automatic
  • 201,000 miles

Hey,
I have a 1997 Mercedes S420 that is having a problem when idling or basically at low RPM's. When the engine sits at low rpms and even occasionally just after coming to a stop, the engine simply shuts off. All electronics remain on however power steering is off as well (engine driven I presume). The car will start back up immediately by removing the key and starting normally. Any help would be great!

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Monday, June 20th, 2011 AT 9:44 PM

2 Replies

  • Tiny
  • rasmataz
  • Member

Bring it in and have the Electronic Accelerator (EA)/ Cruise Control (CC)/ Idle Speed Control (ISC) Actuator (S420) On top center of engine checked and tested-

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Monday, June 20th, 2011 AT 10:01 PM
  • Tiny
  • svcampbell
  • Member

I just went to an auto shop and had them use a diagnostic device. Results showed a problem with the oxygen sensor, mass air flow sensor, and the secondary air injector system. Does this change what should get checked?

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Tuesday, June 21st, 2011 AT 12:34 AM

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