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Hi, i’ve been having a ton of overheating issues with my jeep. ve been trying to fix my 1999 jeep cherokee sport overheating problem. so far ive replaced the thermostat, the upper and lower radiator hoses(after they blew up!), and a local mechanic replaced the radiator, (and the serpentine belt, which i believe is the cause of the water pump now leaking ).i have flushed my coolant system; i drained the old coolant, then spliced in a flushing tee into the heater core inlet hose and cold-water flushed the system for 45 minutes with the engine running.
the temp stayed low for the water flushing,so i turned the engine off and drained the water. i added a bottle of radiator flush solvent and topped off the radiator with water. but when i started the radiator flush solvent washing the temp shot up to 250 within 2 minutes. i let it cool down for 10 minutes, the temp went down to 220, then i ran the car again for about 15-20 minutes at 220 , then the temp went up again it cooled down from 250 to 220, then i ran it again, but it eventually overheated again,
over the last few days it hasnt overheated, but i think it might be due to the weather cooling down, i live in wisconsin. i don’t know why this is.and also the heat that i’m wondering about. i’ve followed eric’s heater core flush video, and aside from a few specific procedural questions i think i followed it well, but still no heat. any suggestions what to do next? i thought maybe doing another ‘mystery product(clr)’ soaking and then hooking up a garden hose to to lower heater core hose and trying to to a (garden-hose)pressure flush. any thoughts? thanks!
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