'97 Mercedes S420 Engine Stalling at Idle

1997 MERCEDES BENZ S420
201,000 MILES • V8 • 2WD • AUTOMATIC
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SVCAMPBELL
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  • 2 POSTS
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!
Jun 20, 2011 at 9:44 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
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-
Jun 20, 2011 at 10:01 PM
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SVCAMPBELL
  • MEMBER
  • 2 POSTS
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?
Jun 21, 2011 at 12:34 AM
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