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So I am assuming i have to pressurize the system. My overflow is full, and i think the rad is full. Do i just run the truck with the rad cap off? Sorry noob here.

Ive put it all back together already without a hole. How do i burp it? Also it feels like there is no coolant flowing in the large hose that comes from near the top of the rad to the tstat housing

I have to replace the t-stat. Just wondering if it matters what orientation it goes into the housing. It has no holes as far as I can see... Its made by stant. Also, do i just install the t-stat into the block, put the gasket over it, then the housing, and tighten?

I put my finger over the vacuum line going to the watermixer, and can feel almost no vacuum. I follow it to the firewall, and feel a ton of suction there. But i cant seem to locate exactly where its coming from. I follow the line into the insulation, but cant reach in very far... In other posts...

I have a 92 XJ with no heat either, Tried rad flush and core flush seperatly. I replaced the thermostat, but still have no heat. My core hoses are one super hot, and one luke warm. I noticed that i have very little vacuum, to this control valve. I follow the vacuum line back and it goes into the...