Symptoms of a BAD THERMOSTAT and how to test it - in 10 minutes! +Thermostat Replacement, Code P0128

Everything you need to know about car thermostats in one short 10 min video.

See all the topics covered in the time stamps:
00:00 - Intro
00:18 - What is a thermostat
01:16 - How does a thermostat work
01:48 - Symptoms of a bad thermostat
01:58 - Stuck closed thermostat symptoms
02:28 - Thermostat stuck open
03:17 - Is it OK to drive with a P0128?
04:15 - How to test STUCK CLOSED thermostat
04:48 - How to test STUCK OPEN thermostat
05:36 - How to buy BEST THERMOSTAT
06:13 - Example of wrong thermostat
06:42 - Thermostat replacement
06:50 - Where is the thermostat located
07:30 - How to drain coolant
07:50 - Thermostat housing
08:17 - Thermostat replacement tips
09:54 - Conclusion

A few products I personally own and use:

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Disclaimer:
Due to factors beyond the control of Make It Easy Mechanic, it cannot guarantee against improper use or unauthorized modifications of this information. Make It Easy Mechanic assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Make It Easy Mechanic recommends safe practices when working on vehicles and/or with tools seen or implied in this video. Due to factors beyond the control of Make It Easy Mechanic, no information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. Any injury, damage, or loss that may result from improper use of these tools, equipment, or from the information contained in this video is the sole responsibility of the user and not Make It Easy Mechanic.

[ositoelosito]

You forgot to mention that after adding antifreeze at the end....should start the car without the radiator cap to allow any air to go out of system.

[pgreenx]

My favorite you tube mechanic is back! love these videos even if I don't have the car problem noted

[WinterTires-uvmr]

Informative and straight to the point. No useless talks. Thank you. Subscribed

[ScoutsIX]

This is fantastic educational material, thank you! Clear and concise, but with plenty of detail to give context!

[gregoriohodgson]

Very, very good.Professionaly well explain. Well done.

[rolandduudee]

That's good 👍 of you man, great work, good English view from Nigeria

[rikohudak]

Hello, please. I have a question, my diesel engine 2.0 140kw dfha takes pretty long to warm up, in city traffic its very long, sometimes it drops from 70 to 50 when im waiting on trafiic lights, but after drive for around 15 minutes it reaches 90 degrees, than it stays normally there. is it a problem?
Thanks

[Beparepa]

Costs 1000 to change thermostat on 2012 jetta thanks too German engineering and dealership charging 180 per hour labour

[HomeJames-tp]

That's false information if it's the thermostat you also can see the bloody radiator not circulating and it's not the water pump because you'll hear a squealing sound like the serpentine belt or you could j you can check that pulley to see if it's loose but the thermostat is responsible for circulating the water just like the water pump but more importantly and just look at your radiator the water is not circulating it's the thermostat and this guy should say never ever ever ever ever never put coolant in your engine the radiator rather when it's not on yeah you could do it when it's cold a little bit but I don't recommend it and how will you be able to see if the coolant is moving hence blaming the thermostat

[ElmerPacheco-jj]

GREAT VIDEO, HOWEVER I STILL CAN'T FIGURE OU OUT WHY DODGE DURANGO ENGINE 4.7 OVERHEATING AFTER HEATING UP THE THURMASTAT IN WATER IT OPENED UP AND CLOSED IT ALSO FIT GOOD IN THURMASTAT LOCATION AND I DO HAVE HEAT COMING OUT OF HEATHER , I ALSO FLUSHED REDIATOR AND DID BLEEDING JOB HOWEVER BLEEDING JOB NOT WORKING OUT I STILL SEE BUBBLES AIR. DON'T SEE ANY VACUME LEAKS I HAVE NO IDEA WHAT TO DO NEXT ..ANY SUGGESTIONS ADVICE

[ElmerPacheco-jj]

5 TOO 20 DOLLARS FOR A THURMASTAT ? I WAS JUST CHARGED 35 DOLLARS AT AUTO ZONE..I DIDN'T BUY IT 😅