1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

What do these do?????

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Old 04-16-12, 09:55 AM
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What do these do?????

my build is nearing the end. Maybe two more weeks and ill have her started.... (If i did everything right.) The previous owner removed the actuators and the air pump. So what do these things do. Vacuum switch, Relief solenoid valve and switching solenoid valve. If i don't need them how to i plug up the vacuum holes. Thanks in advance guys.



Old 04-16-12, 10:01 AM
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1) Vacuum control switch.

Originally Posted by acekid7
my build is nearing the end. Maybe two more weeks and ill have her started.... (If i did everything right.) The previous owner removed the actuators and the air pump. So what do these things do. Vacuum switch, Relief solenoid valve and switching solenoid valve. If i don't need them how to i plug up the vacuum holes. Thanks in advance guys.
The vacuum switch connects to the ECU. I don't know what it does but I believe it has something to do with the two below.

The other two, I believe, control the air control valve which if memory serves correctly is what dumps all the air into only one rotor on de-acceleration to stop backfires.

Hopefully, someone else knows better.

Last edited by rx7lives; 04-16-12 at 10:07 AM.
Old 04-16-12, 03:58 PM
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thanks man any one else know??
Old 04-16-12, 06:46 PM
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the two solenoids are for the air control valve. i'm not sure what the vacuum switch actually does, but i know that it will horribly fail smog if its missing/bad
Old 04-16-12, 10:05 PM
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well i guess im putting them back on. thanks guys




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