OK, the weather is nice, the year is nearly over and I need to get off my rear and do something (running 10 miles this morning wasn't enough ... ). I figure I might try cleaning the lines to the overboost protection relay and to the ALDA. I'm sure there's some soot in there. I've been reading and reading previous threads, and my one paranoia (well, OK, I have about 543 paranoias, but I'll just voice the one) is that I'm going to booger something up and make the overboost relay nonfunctional, causing my car to get too much boost and ruin everything. Is disassembling/reassembling this stuff pretty much idiot proof or should I not attack this? Anything I should check for to assure proper function upon reassembly? My plan is to take the lines out, clean them with WD40 and pipe cleaners and put them back on. Is that the whole shebang?

Oh, and should I actually try to clean up the connections/nipples on the overboost relay, intake manifold and ALDA, too? Or just the lines?

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1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--370,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--140,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--19,000 miles
1982 Peugeot 505 diesel, 4-speed manual, blue/blue, 130,000 miles
1995 S320, black/parchment--34,000 miles (Dad's car)