BANNED by Kris
Join Date: Oct 2011
Location: Pasadena, CA
Thanked 114 Times in 106 Posts
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You probably have the correct t-stat (though wouldn't put it past a counter jockey to get it wrong, looking for a NAPA THM 371203). What StrokerIH and I are suggesting is that it was installed up-side-down.
About the air-lock, that's why I drill the small hole in the t-stat. Air pushing on the t-stat will not heat up the way a liquid would and in some cases (if there is excessive air) the t-stat won't open at all. The small hole will allow the air to creep past the t-stat and get the coolant right up to it. Still if it is a 4x2 then you need to lift the front of the truck so that any trapped air in the block will move to the front.
-'97 Mini Monster
-Bean's: 160/100 (FF Injectors), 2/ 6-POS chips (TW & Beans tunes), Overboost controller, E-Fuel
-BANKs: downpipe, full exhaust, gauges, intercooler
-Irate: T-4 kit, IC pipes, 3" Irate Plenums, BASB Turbo
-Stage II trans.
-Mag-Hytec trans. and pumpkin covers
-6637, CCV, IDM, 6.0 Fan, 49-Federal PCM swap, MAP line Mod
-370 Amp alt., 40k trans cooler, ADRENALINE PUMP
-twin on-board air w/ 10 gal. tank
-'15 F350 6.7L DRW 4x4
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