Car came with sound panels under engine and tranny. I learned to anticipate hills and adjust throttle accordingly. Mine does kick down however. I replaced that switch at 100k miles. Simple fix. I can get to 90 but not quickly. My car is more like the tortoise than the hare. I've seen that yellow stuff before. Probably clear lacquer sprayed on to make the engine look new. Semichrome paste and some steel wool should remove it. I'll check on those vac lines when the sun comes up and get back to you.

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