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84-86 Carb ECS code "52 Solenoid Valve Control System"


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Does anybody know what this code means or what part it refers to? ECS light comes on when the car is all the way warmed up and after driving a certain amount of time but I havent figured out how long just noticed its about the same amt of time each time.

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52 is solenoid valve 1, which according to my FSM controls the ASV(s). There are either one or two vacuum operated air suction valves comming off the spacers under each head. If you follow the vacuum supply line from one of these it will lead you back to solenoid 1. You can replace it with one from an SPFI soob or I hear the toyota ones are good too. Or a resistor should get the code gone. The ASV's aren't needed for proper operation and they tend to fail and suck junk into the carb anyway.

 

solenoid1.jpg

 

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