Mystery Screw/Valve/VSV
07-26-2011, 07:11 PM
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Mystery Screw/Valve/VSV
Hi guys..... 1991 Toyota Pickup V6 - 3VZE
I cannot for the life of me figure out what this thing is called/does. It looks like a VSV valve but it has a big black adjustment screw with a spring on it. Any ideas? The technician found a vacuum leak on the hose going to it and I'm just curious what it does because somehow i missed it despite having sprayed the hell out of all of the vacuum lines with Carb cleaner...
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I cannot for the life of me figure out what this thing is called/does. It looks like a VSV valve but it has a big black adjustment screw with a spring on it. Any ideas? The technician found a vacuum leak on the hose going to it and I'm just curious what it does because somehow i missed it despite having sprayed the hell out of all of the vacuum lines with Carb cleaner...
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07-26-2011, 07:39 PM
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After searching every resource I could find, I finally used the right keywords in google to figure out that it's a VSV/Diaphragm that controls the idle increase when A/C is turned on. Turning the screw adjusts the idle.
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