Basically Since I bought my 2012 Wrangler last year I've had overheating issues or atleast I thought I did.
I made a thread on here, I looked at other forums and posts and never got any solid information. At first I thought it was due to my winch and grille inserts. But I was told by other people they run high mounted winches and live in hot weather areas and never have a problem.
Long story short I've discovered that chrysler "designed" our wranglers with the 3.6l to run hot for emissions. Thermostat will open around 221 degrees and the fan wont kick on to high speed until 230 degrees, which falls in line with the temps I've been seeing.
It also seems although they couldn't get proof that the temp gauges in the newer Wranglers are the same as the ones in the 3.8l JKs and they should have been calibrated differently so the needle doesn't go so far over at lower temps than what the engine is designed to run at.
Honestly I think this is BS. this quote about the heads going bad makes me question everything.
Bob Lee, Chrysler's chief of engineering, said, however, that excessive heat was not a factor in the malfunction and that his engineering teams spent months isolating its causes. He said the malfunctions were the result of "an interaction of a lot of rare things that ultimately come together to affect a small percentage of the population." Those could include different fuel mixes and the way the vehicle is driven, he said
I just don't see how a v6 with aluminum heads designed by chrysler is not taking damage running so hot. I love Jeeps and I'm a mopar fan in general but Its not like they're known for high quality products. I do think they couldn't design a better way to run cooler and still beat emissions without added cost so they said "eh good enough"
With all of that said what are some suggestions on how to keep temps down on my jeep. I managed to get to 234 degrees today and the outside temp was only 43F. At this rate when its 80-90 degrees out my jeep will be idling at 230.
I haven't found a lower temp thermostat for the jeep yet but some people argue that won't help anyway.
I've seen people install mechanical fans on their JKs, hood vents, better fans, dual fans, tuners to change temp that the fans come on, mechnical bypass switches etc etc.