It supplies Vacuum to the EGR valve and Canister purge for the Charcoal canister when the enging is warmed up.
87YJ, 4.0, AX15, NV231 Montsaliner DBTO
99XJ, 4.0, AX15, 33's, locked both ends, driven daily, and wheeled often.
Off Camber Crawlers Member at Large
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