Hey guys, new to the forum here. Recently I bought a 99 TJ with only 50,000 original miles on it! But the other day while driving around on a relatively warm day, I noticed the hood of my Jeep was insanely hot! Like I could have fried an egg on it! There were no engine over heating warnings, gauges were normal, and it seem to be driving around just fine. But I could not believe how darn hot the hood was. I popped the hood to let the engine compartment cool off because I was quite alarmed at this. Is this normal?! I have heard the 4.0 engines run hot but holy cow! Coolant levels were also fine. The hood is also white. It just didn't seem right as to how incredibly hot it was to the touch.
Jeep hood is incredibly hot
- Thread starter MacdaddyTJ
- Start date
Yep, normal, as long as you're not throwing codes or spiking on the temp gage. Don't touch the prop rod, and don't forget some sausage or bacon when you cook that egg.
Yep, normal, as long as you're not throwing codes or spiking on the temp gage. Don't touch the prop rod, and don't forget some sausage or bacon when you cook that egg.
I keep gloves handy when wheeling in the heat.
That prop rod gets insanely hot especially when running the AC. I recently installed gas struts so now I can lift the hood with one finger and it stays up.
Fathers day weekend @Hog and I drove his LJR to a harbor freight 13 miles away
After being in the store about 20 minutes the hood read 170 degrees with an infrared.
Water boils at 230 degrees i think.
The real problem with the jeep engine compartment is air does not escape easily-
Do any of you guys remember when guys would set up the rear of the hood to set about an inch and a half above the cowl in the 70’s? That worked.
After being in the store about 20 minutes the hood read 170 degrees with an infrared.
Water boils at 230 degrees i think.
The real problem with the jeep engine compartment is air does not escape easily-
Do any of you guys remember when guys would set up the rear of the hood to set about an inch and a half above the cowl in the 70’s? That worked.
Ya someone also mentioned there is no under hood insulation so ya got heat coming from the engine and heat from the sun. Thanks guy, I was just a little worried about that. Things usually don't last long under intense heat! I know I dont!
Ya someone also mentioned there is no under hood insulation so ya got heat coming from the engine and heat from the sun. Thanks guy, I was just a little worried about that. Things usually don't last long under intense heat! I know I dont!
It has lasted nearly 20 years and 50,000 miles
Just throwing it out there but I believe water boils at 212*f. The coolant and 18 psi radiator cap allows the coolant temps to get as hot as they do without boiling.
Adding a good louver was the best thing I did to cool my engine bay, and it greatly reduces hood flutter. I’m able to handle the hood most of the time even in summer desert temps. The hood was typically scolding hot at operating temps before I added the louver.
At a certain altitude
212*F at sea level. Looks like it drops about 1*F for every 500 ft of elevation over sea level.
I would add louver(s) but I like the way the stock hood looks.
I didn’t want a louver either bc I preferred the stock look way more.
I eventually installed one to lower my intake temps after adding the turbo. I chose function over form at the time bc I expected to not like the look very much. I consider myself lucky bc the satin louver goes well with the other black parts to offset the khaki.
I understand if you don’t want to add any vents to the hood bc you like the original look.
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At a certain altitude
At a certain altitude
At a certain altitude
International standard atmosphere.
Generally accepted as 15C/59F, 14.7psi/1.0132 bar (sea level)
There are other organizations with different reference points.
I've always been in the habit of testing my thermostats on the stove before install. I had to skip that step when I lived at 7500' because I couldn't get the water hot enough to see the thermostat open all the way.
Do you have a link to those struts and a pic of how you installed them?
It was fairly easy to install. Lining up the flag nuts with bolts was the hardest part.