Anonymous-0
Well-known Member
Finally getting cold in Iowa and fighting the 2002 Dodge Ram 1500 heater again. I pretty much know without a doubt that it is the heater core. I took the hoses loose a year ago and poured Justice Brothers cooling system cleaner into the core and it did work better - actually good enough. My question is this - is there anything I can pour into the heater core that would work even better and maybe resolve this problem for a longer period. Didn't know if the household calcium, rust, and lime cleaners might work. As I understand this heater core, coolant just flows across the top of the core from the inlet to the outlet. If the core is blocked slightly on top the hot coolant never really flows into the core. Any advice will be appreciated. How big of a job is it to change the core in a 2002 Ram 1500?? Thanks.