1989 Mercedes-Benz 420SEL 4.2L Surge
With one exception all socket box tests are good, the exception being ECT, ohm values are perfect both sides of sensor KOEO, with the key on the fun starts,the CIS side voltage drops to about half, the KOEO ref. voltages are just under 5 volts, it will not go ...
Summary posted 6/16/2013
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Vehicle Data1989 Mercedes-Benz 420SEL
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Message Closed w/Summary
Vehicle Data
1989 Mercedes-Benz 420SEL
VIN | WDBCA35E3K |
Engine | 4.2 L / 8 cyl / GAS |
Trans | 4-speed Automatic |
Delivery | Fuel Injection / CIS-E |
Emissions | OBD1 |
Symptoms | Surge |
Occurs | Cold |