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Owns A Torsen
Joined: Mon Sep 18th, 2017
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Water freezes in the cold.
I'm not saying it isn't your booster but I would do a complete flush of the brake system purging any existing fluid.
I have personally diagnosed a vehicle that would not steer in the cold, and had a horrible belt squeal when it was below freezing. It turned out moisture had formed in the power steering fluid (a hygroscopic hydraulic fluid like brake fluid and a lot of transmission fluids) to the point that it would slow the flow in cold weather till it warmed up.
Like I said I wouldn't discount the booster but wouldn't put all the eggs in that basket.
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00 XLT 4WD RCSB 3.GO! Jalapeño
01 XLT 2WD RC Steppie 3.0 auto Silver
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