GraniteCrystal
New member
Man, I hate problems like this. They make me doubt all the time and money I've put into it. Don't give up; you'll find the issue.
WJCO's Build Thread, 1999 WJ
- Thread starter WJCO
- Start date
madstiles
New member
If your new thermostat doesn't have it drill a small hole like the factory thermostats have. It might help.
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Sent from my SAMSUNG-SM-G935A using WAYALIFE mobile app
WJCO
Meme King
What's the purpose of that? I've heard of people doing that before.
madstiles
New member
So you don't get hot and cold spikes and cause damage is my best guess. Jeep thought it should be their and for some reason aftermarket doesn't lol
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Sent from my SAMSUNG-SM-G935A using WAYALIFE mobile app
Andy5160
Hooked
Nice piss!!!!!!!!!!!!!!!
WJCO
Meme King
I need to drink less.
Andy5160
Hooked
Nahhhh don't even think about it.Your liver might regret it !!!!!!!!!!!!
DVLDOG
New member
WJCO
Meme King
About 230-235. Issue is that it didn't ever do this before. Once it hits about 225, the AC starts blowing warm, so something's not right. Tstat didn't fix it. I installed a new radiator cap for giggles and will test it tomorrow. If I drive moderate/highway speeds, it's fine. At a stop, or low speeds it starts creeping up, worse with AC on. Fans are new and working, all fins cleaned. I flushed coolant and it was in perfect condition. Water pump is about a year old but only about 2000 miles old. I'm wondering if the pump is going bad...
Last edited:
madstiles
New member
Head gasket? Have you done a compression test?
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Sent from my SAMSUNG-SM-G935A using WAYALIFE mobile app
WJCO
Meme King
I haven't. I doubt that's it. No water in oil, no oil in coolant, no bubbles in cooling system, etc.
JeepJeep75
New member
The small hole in the thermostat is to allow water from the hot side into the cool side where the spring/wax pellet is. Kinda weird that some aftermarket T-stats don't have this.
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WJCO
Meme King
I'm hoping I fixed this issue. I put a new radiator cap on yesterday thinking it was futile because I thought the old cap was fairly new. Well after inspecting it, the old cap had a ton of cracks in it. Maybe it wasn't as new as I thought. Testing the Jeep out in the driveway today, it seems to be a lot better. Pictures of cracks, hard to see:
Andy5160
Hooked
Cap cap fucking cap :doh:
HighwayTrout
Hooked
Damn. I hope it's the cap! I hate these type of problems.
USMC Wrangler
New member
Fingers crossed it's the cap!
aTX427
New member
