looks like I'm a little late to the party, but heres what I wind up doing to fight this ridiculous Texas heat (104*RN)
First step get yourself something to read the actual numerical output of the temp gauge, not the stupid idiot light excuse for a needle on the dash, but an actual gauge. I use an
Ultragauge one of the best investments ever, plugs into the OBD2 and shows what the computer sees, super cheap and simple and waaay better than the wireless dongle and app I was using before
(you can see it in the top left of this photo - engine was cold at the time)
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I then replaced the whole cooling system, using a HD fan clutch and all MOPAR parts.
Make sure to replace your rad. cap and thermostat housing!!!!! my housing was cracked so slightly I hadn't noticed and led to VERY slight leak and overheating at idle.
if you are overheating going down the road, you have a different problem but for me I couldn't pull enough air through the rad at idle to keep her below 220* (whereI start to get nervous) so I wound up installing a
AUX. electric cooling fan this was before I found the crack in my thermostat housing and may not have been ultimately necessary but has been absolutely dead nuts reliable thought the summer. I can not get this thing to go above 215 no matter how long I sit in traffic, fan comes on and cools her right back down to 200 if I leave the fan on she'll stay right on thermostat at 195.
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