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1987 Mercedes-Benz 420SEL 4.2L Poor Idle Quality, Cuts out, Stall
Posted to European Driveability on 1/24/2003 7 Replies

ENGINE WILL IDLE ALONG OK UNTIL IT GETS WARM, THEN IDLE WILL START HUNTING FUEL PUMP WILL CUT OUT AND CAR WILL STALL

WE INSTALLED NEW FUEL PUMP RELAY BECAUSE OTHER WAS BURNED, CHECKED AMP DRAW ON FUEL PUMPS 7.5A, PINNED OUT CIS-E BOX, IDLE CONTROL UNIT CONNEC...

7 Replies Received (View Replies)

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car Vehicle Data

1987 Mercedes-Benz 420SEL

VIN WDBCA35D9M
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CIS-E
EmissionsUS FED EMISSIONS
SymptomsPoor Idle Quality, Cuts Out, Stall
OccursAlways, Hot
Message Closed

car Vehicle Data

1987 Mercedes-Benz 420SEL

VIN WDBCA35D9M
Engine4.2 L / 8 cyl / GAS
Trans4-speed Automatic
DeliveryFI / CIS-E
EmissionsUS FED EMISSIONS
SymptomsPoor Idle Quality, Cuts Out, Stall
OccursAlways, Hot