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1988 Mercedes-Benz 420SEL 4.2L Poor Idle Quality
Posted to European Driveability on 4/26/2019 14 Replies

Any thoughts on correct IAC module driver voltage? Have a consistent 1.3v to 2.5v, varying reading at all times. Some manual info states I should see 3-11 v., depending on [...] signal volt inputs to module,i.e., ovp relay, tach sig., temp sensor, etc are ...

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  Related Documents & Media  1988 Mercedes-Benz 420SEL

 
Message Closed w/FIX

car Vehicle Data

1988 Mercedes-Benz 420SEL

VIN WDBCA35D0J
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / cis , k-jet
Emissionsfed
SymptomsPoor Idle Quality
OccursAlways, Idle
Message Closed w/FIX

car Vehicle Data

1988 Mercedes-Benz 420SEL

VIN WDBCA35D0J
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFuel Injection / cis , k-jet
Emissionsfed
SymptomsPoor Idle Quality
OccursAlways, Idle