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1988 Mercedes-Benz 420SEL 4.2L Poor Idle Quality
Posted to European Driveability on 3/26/2009 14 Replies

car has fast idle,1400rpm,hot-cold,cannot fault idle control system,with no power to system idle increases to 1800rpm,i have ignition timing of 35 deg at idle,specs are 5deg,pull vac line from ezl unit timing drops to 5deg,idle drops under 1000rpm,cannot find ...

14 Replies Received (View Replies)

  Related Documents & Media  1988 Mercedes-Benz 420SEL

 
Message Closed w/FIX

car Vehicle Data

1988 Mercedes-Benz 420SEL

VIN WDB1260352
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / cise
Emissionsold
SymptomsPoor Idle Quality
OccursAlways
Message Closed w/FIX

car Vehicle Data

1988 Mercedes-Benz 420SEL

VIN WDB1260352
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / cise
Emissionsold
SymptomsPoor Idle Quality
OccursAlways