I forget what else goes on 18, if anything...but if the car is hot, then there should be vacuum to the fast idle unloader definitely... There are 3 thermovalves, I think. A is the one closest to the driver side, B is the one next to it, and C I think is the one near the thermostat.
I had no trouble getting A out to test it...just a wrench on the hex part of it. Stuff like that should have anti-seize lubricant upon installation. All I can think of otherwise is penetrating lubricant.
As for the manual choke, your guess is as good as mine there I've never done that lol...but one thing... If you have to hold the accelerator a little bit to keep it up when it's warming up, that sounds like the fast idle is disengaged. If the car stalls when the throttle is set to have it around 2500 rpm you have a SERIOUS problem. If you're planning on fixing the fast idle (and good luck with that
lol), then if you're successful, the car should warm up without the assistance of fine-tuning....unless you just want it to run as best as possible or some silly thing like that.
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