please dont toss parts at it. thats a waste of money. if the vac line smells of gas, then change it, dont wast your time or money if theres no smell.

do clean the tb up tho, remove the maf first, as nothing should touch that but maf cleaner.

the plugs all over, i must say we all have like 3 plugs to nothing. its normal. by the battery, the fire wall, the rad support area. all spots with plugs to nothing.

the hvac, whats up with it? air flow direction not working, or hot one side cold the other?