Boiling Coolant at Overflow Reservoir (2004 Toyota Sienna) - 179k miles

update....184,600 miles.....fan module is still running great. We did have an issue with the fan. Oddly enough the new part was defective and one fan blade came unscrewed. This happened after only about 2,000 miles. Check out this video (   • Online Parts For Car  -  Beware  ).

All kinds of videos are out there on this topic. Fear set in pretty quickly as I automatically assumed I had a blown head gasket. Fortunately, I was spared and the problem was quite elementary. I did perform tests to eliminate the blown head gasket. I removed those sections from the video as it shortened my video to a reasonable length. Those tests were: Checking for exhaust gases in the coolant = none; and checking for water in the oil = none. I did not do a compression test on the cylinders as I felt confident with my diagnosis and repair.

Channel merchandise and more:
https://www.redbubble.com/shop/ap/646...

Parts:
1. Radiator Cooling Fan Control Module (https://amzn.to/3n7QQRV)
2. Coolant for Sienna (https://amzn.to/3l5oG8h)
Tools:
1. Safety glasses (https://amzn.to/3cNn3co)
2. Hose clamp Plier Set (https://amzn.to/3cQbEZy)
3. Needle nose vice grips (https://amzn.to/2GoCCeD)


This video is intended for entertainment purposes and personal documentation. My goal is help guide others when it comes to basic car services outlining my experiences. If you are not familiar with basic tools and usage techniques, or you are unsure if you can safely prepare a vehicle for service, I encourage you to review your car's owners manual and/or recruit the help of a friend or neighbor who can effectively fill the gap.

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#DrivewayCarRepair #Sienna