I`m going to flush it with water again tomorrow and put antifreeze in it and test it again but I think I found the problem and fixed it. Toyota requires a super long life coolant, which has preservatives in it.
I banged them on the edge of the workbench going all the way down the length of the hoses and more of that brownish stuff fell out.I flushed them with water and put them back on and the heat works great.I drove around for about a half hour and the heat remained hot and consistent. Flushing your radiators antifreeze helps protect your engine from overheating. The hoses didn`t feel very flexible so I banged them on the cement driveway and I heard crackling crunching sounds,when I held the hoses up a lot of hard shiny brownish crude fell out. There was dried rusty crude inside the heater core pipes,i scrapped it off. rumors of a super(Sony) naturally, showcase out the first pitch at a Amounts to a very computer uplink for Sony technology. Then I flushed the heater core again but this time I took the hoses off. Remove Aluminum Corrosion, Silicate Gel and Rust.
Helps Eliminate Oil & Fuel Contamination. This video is specifically recorded on a 2005 Dodge Dakota but the concepts and principles. Acid Cleaner Strips Away Corrosion and Scale Without Damaging Metals. Using a Flush Kit to flush your vehicle's cooling system at home. Clean the entire system with R40 so when the radiator is reinstalled, the core will not be contaminated with scale and residue from the rest of the system.Today I drained the radiator,filled it with plain water, ran the engine for about 15 minutes then drained it again, I did that 3 times to get all that radiator flush out. 2in1 Radiator Flush & Oil Degreaser Safely Removes Rust and Corrosion Deposits, Scale, Silicate Gel, and Oil & Fuel Contamination.