Quote:
Originally Posted by rhipsher
It works great in the summer time. But when it starts getting into the 30's not so well. When it gets cold and the aluminum throttle body contracts it causes the butterfly plates to stay open. Get tired of idling at 4000rpm's at the light. Unblocked it and when the hot coolant makes its way back into the throttle body it works like a charm. Luckily or unluckily it doesnt stay cold very long in Texas before that "fry an egg on the sidewalk heat" makes it's way back. I'm going to put a summer/winter valve in line.
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Hmmmm.... I'm not having that problem, and I have installed the plugs in the IHs and capped off the coolant line that loops thru the TB from the passenger side. Starts, idles, and runs just fine...28 degrees...no coolant in the TB. Having this discussion w/ Marc H, he and I agreed that once the engine fires, and runs for just a little while, there is plenty of heat under the hood to prevent frosting.
And, after all, these cars were taken to Canada in the dead of winter, something like -30 or -40F, if I recall, and fired them up. At the moment the engines fired, the coolant would be at ambient temp, or waaay below zero. There was no discussion about them having issues like you describe, FWIW.
My point is, if your throttle plates are sticking at +30F, then something needs to be adjusted, methinks. But, just to be sure, I'll fire her up (temps in the low 20s now) and let you know how it goes.
P.