It’s Not Getting Hot in Here – Replacing Jeep TJ Thermostat and Housing

The TJ’s temperature gauge stopped getting up to full operating temperature. All symptoms point to a failed or malfunctioning thermostat. This video shows how to replace the thermostat, throw on a new housing, check to see if your coolant temperature sensor is functioning properly, get the air out of the system after you fill it up, and a few surprises and issues along the way.

If you’re interested, you can support my parts-buying habit through BuyMeACoffee at https://www.buymeacoffee.com/edvancise

Parts you’ll need (Amazon Affiliate Links):
• Zerex Original Green 50/50 Prediluted Ready-to-Use Antifreeze/Coolant https://amzn.to/3mAZIRx
• Superstat Premium Thermostat https://amzn.to/3u6Ib6u
• Dorman Engine Coolant Thermostat Housing https://amzn.to/3KZppVm
• Thermostat gasket (buy separate or one might come with the new housing)

Tools (Amazon Affiliate Links):
• 40-Piece Premium Tap and Die Set https://amzn.to/3wnymEa (5/16-18 threads for housing bolts)
• Hose Clamp Pliers https://amzn.to/32agKym
• 15mm socket, ratchet, extension (to loosen belt tension)
• 1/2" socket, ratchet, extension (to remove thermostat housing bolts)
• 5/16” socket, ratchet or driver handle (to release screw clamps)
• Flat screwdriver (to release screw clamps and free hoses from housing)
• Funnel
• Catch basin

Torque: Torque thermostat housing bolts to 15 ft-lbs (180 in-lbs)

Project TJ is the chronicling of working on my 1997 Jeep Wrangler. It's the SE version of a TJ with a 2.5L four cylinder and a standard transmission. At the time of making this video, the Jeep had ~207,700 miles on it.

I hope you enjoy! Subscribe to the channel and if you’re interested, you can support me on BuyMeACoffee at https://www.buymeacoffee.com/edvancise

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Intro (0:00)
Removing old thermostat (1:47)
Comparing Old and New (8:15)
Installing New Thermostat (10:20)
Burping out the air (17:57)
Epilogues 1 and 2 (22:50)

Disclaimers:
This video is NOT sponsored by any of the brands mentioned throughout this video or video description. All thoughts mentioned are my own. Some links provided are affiliate links. They do not cost you anything, but I make a small percentage from the sale. Honesty is key on my channel, thank you for supporting me!

I am a Do It Yourself, also known as DIY, mechanic. I am NOT a professional mechanic. I do not have any formal training in the automotive field. I assume no liability for anything you choose to do to your car/vehicle or equipment before or after watching one of my videos. All DIY repairs or modifications you perform are made at your own risk. Sometimes, even if you've done everything the right way, you can destroy or damage one or more things on your car or equipment. You must understand this, but by leveraging knowledge and patience, the probability of encountering one or more problems can be reduced.

Also, if for some unfortunate reason, I do give incorrect instructions and something breaks because you followed my instructions, I will NOT reimburse or pay in any way for whatever cost that may be incurred due to following my wrong instructions.

Lastly, please don't do anything to your vehicle or equipment unless you yourself feel comfortable and confident in doing so.