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Old 10-01-2003, 01:24 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,118
It's a thermal vacuum switching valve of some sort. Probably for the EGR system if you have an EGR valve. The ECU and gauge temp sensors are further back along the same line.

Follow the vacuum lines, see where they go.

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