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West-Central Missouri | I have an ,04 freightliner columbia. It is not building air. It is just exhausting at what i believe is the purge valve in pic. I took the purge valve out and cleaned it.
2nd pic is my purge valve. Should there be something that threads on the bottom?
Also what is the electrical connection for in pic 3?
Edited by gbryce 9/9/2024 18:27
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Truck not building air.
