I have a 1998 ford f150 with a 4.6 with approx 130,000 miles on it. I heard you have to discharge the a/c on it to replace the heater core. I have replaced heater cores before on other cars & trucks and never had to do this. I this correct? Also I am not positive it is the heater core but I smell antifreeze inside the truck so that leads me to belive that is what it is.
Monday, June 25th, 2007 AT 9:45 PM