Fishhawk
New Member
Put a Flowkooler in my 85 and the original heater core lasted about one hour. Replaced it with a stock Ford replacement and haven't had any problems ..... yet.txstang84 said:usually it's one of the solder joints in the core that goes bad, or a plugged passage causing overpressurization...i've blown out three of them in the past, the second one looked like a balloon. then finally i discovered the combination of a parts store heater core and a flowkooler high volume pump do not a reliable heater core make....so i swapped to a normal water pump, my temps only went up 10*, and i'm still running with the same heater core i changed about two years ago with no issues