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I need to do that as well.

Lol. I fixed the trans leak and everything is going swimmingly so I drive it at least weekly. I usually travel about 100+ miles and the temp still registers the same and doesn't boil over or anything. I blew a hose (hose clamp failed) last year and got to see what everheating looks...

I haven't had the chance to look at it as i was focused on a transmission leak and diff leak. The diff is fixed, not 100% that the trans is, but we'll see. I did take it for a test drive after fixing both. I also swapped my armored grill (anyone need an armored grill?) for the slat/mesh style...

I put a new TDM in and it operates fine...the fan still kicks on at 230ish. I got a new gauge. I figure i'll swap that out next.

The TDM came in today but unfortunately it was fried. It smelled like burnt electronics from the time i pulled it out of the box. I drove around today with no TDM and the engine stayed at 219 the entire time which was nice. The fan being on constantly was about to make me deaf though.

AP: If i figure it out i'll send you a message on what i had to change to fix it or correct the issue. I too did the water wetter. UPDATE: I just got in my new hood radiator grill. I currently have the armored louver version and i hoped to switch to the more open mesh style...

Lindsay, i'll stop there tomorrow! Hummerguy, I'll check the wiring tomorrow thanks for the idea o1951, as soon as it overheats, i'll take a reading emmado22, when i get to the dealership i'll buy a matched set and plug them in...i'm sure i can use the extra parts.

I do wish mud was all it was. I should've mentioned that this hmmwv was built with all new parts and had only 150 miles on it. It hasn't been in the mud at all. I do appreciate all the information everyone has given as i'm sure at some point each of these scenarios may happen to me and it's...

I just swapped out the thermostat, just waiting for the RTV to dry and i'll see what's up.

The fan does engage when its all hooked up and running hot. It cools it down to 220 or so then shuts off. The needle goes back up, and just before 240, it kicks on and cools everything back down. It's like clockwork. For all intents and purposes it does seem to be working i just don't think...

I just ordered the parts, bought another laser thermometer and ran some checks. With the dash gauge reading 235ish I popped the hood and pointed the thermometer at the large hose that runs into the top of the radiator. It registered at 189. I then pointed it at the overflow tank and it...

Who did you speak with at Kascar? I talk to them every day....I will be more then happy to straighten them out on this issue. ************I'm not sure whom. He had a multi syllable first name...not like a dave but more like a jeremy... I dunno. Your truck is not in Iraq in sweltering...

I really appreciate all the help so far...i wish i lived near California. I have some questions, are 6.2 and 6.5 parts interchangeable? It was mentioned earlier that the sender and the gauge may not be matched...perhaps he made an error while adding parts..? At what point do you go into...

I hear that if your engine overheats while in the field the quick fix is to unplug the "controller" which causes the fan to run non stop so that you can get it to a mechanic. I will try that next. I assume if my engine cools off i'll need to replace either the controller or the thermostat...

while driving in traffic it slowly climbs up. If i stomp on the gas it climbs up faster, but gets to 240 then cools down to 220 then back up to 240 before it cools down again.

Fast~ I can't sell her, she's perfect...except for this. The fan clutch is engaging i'm assuming since the fan is spinning. I don't know where the thermostat is, but i'm willing to change it if you think that'd help...i'll even buy one that sets the "on" temperature much lower if that's...

Just got my hmmwv and i'm having overheating issues. Today i took her out for the first time and i noticed that the temp gauge was reading kind of high but didn't waver from that position for a while. I later looked back and it was at 240. I immediately parked the thing and looked under the...