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Old 01-27-2013, 12:52 PM
745 TurboGreasel 745 TurboGreasel is offline
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Join Date: Sep 2012
Location: Freedom CA
Vehicle: 85 745, 84Suburban 96Ram
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The 740 heat system feels weak to me regardless, but just for fun, pop your heat control valve off, and have a look through it, I've seen them so restricted coolant will barely go through them.
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