Check out this Throttle Body Service Tutorial
940 throttle body service – Very clear write-up with good pictures
I don’t even remember when this had last been done on this car — several years ago, that’s for sure. The car had ran well, but cold start idle was rough, and it seemed to run quite rich, emitting a lot of fumes, reminiscent of my mother’s old 1969 Mercury station wagon, back in the happy days before catalytic converters.”
“What is the smaller vacuum hose for. I want to clean my TB but I cant remove the smaller hose because it is deteriorating…if i pull too hard it will surely rip/disintegrate? It doesn’t look like a standard vacuum hose or I would just rip it off and replace it.
Update: Whatever that hose was for, it crumbled a bit but i was able to ease it off, and get it back on. Throttle body was very dirty and it was easy to remove and put back on. Nice write-up.”
Now if I can just find my vacuum tree…”
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