No but I have to floor it to make it start in less than 30 sec of cranking.
(probably a separate issue, Fuel safety switch or 5th injector.) happens regardless of summer or winter.

I need someone to squeeze their hose while the van is cold and see how much RPMs drop.

Part of this is evaluating if the air valve is worth having. (faster warmup is all its providing.)

I could rewire the AC idle up switch for a selectable high idle.