Thermostat Change
Since you have an 02 check your owner's manual. Mine said the 5.7L's have a 180 stat factory.
Start the engine, with the radiator cap STILL OFF. While you're waiting the approximate 15 minutes for it to get hot enough for the t-stat to open...massage the upper and lower radiator hoses to move the coolant through, that should take care of all the air bubbles. Works every time. You'll see little bubbles coming up in the radiator fill neck.
I did a coolant flush yesterday and when I do I remove my t-stat and just pull the drain plug and let it run like that for 15 minutes. It flushes every drop out that way. Then I put the t-stat back in and do what I said above.
Just make sure you're bouncing back and forth watching you temp guage just to make sure its not getting too hot...IF a bubble does cause a problem.
The lower hose will always have coolant in it. But if you feel the top hose has nothing in it, squeeze the lower hose alot more.
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just a tip, use a screwdriver or something to carefully pry and break the seal between the thermostat "neck" and the radiator hose. then twist it back and forth and pull it out. took me a while just because it was 25 degrees outside and there wasnt much room to wiggle with winter gloves on.
just out of curiousity, why are you replacing it? is yours sticking or is it for "performance?"
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just a tip, use a screwdriver or something to carefully pry and break the seal between the thermostat "neck" and the radiator hose. then twist it back and forth and pull it out. took me a while just because it was 25 degrees outside and there wasnt much room to wiggle with winter gloves on.
just out of curiousity, why are you replacing it? is yours sticking or is it for "performance?"
You'd get better cooling at the track by blasting your heater a couple minutes before you stage. The needle should drop significantly.
Might as well go with a 160 and reprogram the fans.
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i believe the stock thermostat is like 182 or 187. not gonna see much difference. and i bought 2 jugs of the unmixed dexcool(then you mix it 50/50 with water) and i used about 1 and 1/8 of them. i didn't completely drain mine though, just what was above the thermostat.
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