Jeep Cherokee: Thermostat Replacement Procedure ['84-'01 XJ] MJ, YJ, TJ, ZJ, WJ 4.0L/ 2.5L

How to replace the Thermostat on a 1987-2006 Jeep 4.0L or 1984-2002 Jeep 2.5L. This video applies to the Wrangler YJ and TJ, The Grand Cherokee ZJ and WJ, and the Cherokee/ Comanche XJ and MJ.

All of these engines use a 195 degree Thermostat. Installing anything lower is not a good idea for various reasons, and is just a band-aid fix, avoiding the real problem. If anyone has told you to “just use a lower temp thermostat”, they’re more than likely wrong. As I like to say, “There’s nothing more permanent than a temporary solution.”

THERMOSTAT GANG

Mopar Confirmed T-stat: https://www.rockauto.com/en/moreinfo....

Thermostat Housing Gasket: https://www.rockauto.com/en/catalog/j...

If you don’t feel like scraping off the old Thermostat Housing, you can just buy a new one: https://www.rockauto.com/en/catalog/j...

Neon Road:    • GLITCHUNTER – Neon Road [Synthwave] 🎵...  
Bonus Video:    • Jeep Comanche - 21 Slot Grille  
JAY:    / @jayman0057  

If you have any questions, just ask!

For reference, I primarily worked on a 2001 Jeep Cherokee XJ and also used some footage from a 1987 Jeep Comanche MJ, both with the 4.0L.

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