i have a 1991 Jeep Cherokee, started overheating last week, i flushed out the radiator with water, i replaced the thermostat, overheated again, i felt the top radiator hose it was cold. so i replaced the water pump. still overheated. every time i drain the system when i refill it i had red to fill the radiator and reservoir, leave the radiator cap off, then start the engine and turn the heat on max, the radiator burps the air bubble out, then the coolant level in the radiator starts going up and down, my thermostat is rated at 195, when the guage hits 210 hot coolant sprays out of the radiator, but the top radiator hose is cold, what am i doing wrong? is there air still trapped in that top radiator hose?
id say its the radiator after all what ya replaced. have it checked out at a shop. before ya do though ya might do a complete flush of the motor and the cooling system. might be a blockage in a water jacket in the motor. ya can buy the flush kit at any parts store, its simply a T that ya splice into on of the heater core hoses,hook up a water hose,turn heater on, and wait with the engine running. if theres any blockage it will spit and sputter till its pushed out with the water pressure. let it idle till clear water comes out then drain and add coolant. try this first with water only and if it doesnt solve your problem id say ya need a radiator.
