Understanding and Testing Thermostats -EricTheCarGuy

[@dreamingcode]

I love that you just dont change parts. You show us why. Great for newbies like me!

[@waynesmith1650]

Man i love this guy. Always detailed... knows his stuff. On point. Very helpful for so many things. Cant say enough about how helpful erics channel has been over the past year or so that ive been watching. As a new driver (im young just started driving a year ago) with no teacher so im learning everything on my own as i go so thanks Eric, been a blessing honestly.

[@dannyingamells6642]

Hi Dave- when you mentioned leaves in between the radiator and the condenser- this really helped me. On a '88 'bird, the condenser is in front of the radiator, and when I moved a wire harness out of the way, the space between it was CHOCKED FULL OF LEAVES AND DEBRIS. I could not just use an air hose to clear it, I had to borrow my upholstery shop buddy's metal ruler, and it took considerable force to clear it. But- lo and behold, my temp gauge showed an improvement- it really is important to keep this area clear of leaves. Thanks Agein for a great video

[@leereader3725]

Eric you have helped me with my 19915.0 Mustang LX, 1992 Taurus SHO,1978 F150, 2013 Dodge Grand Caravan, 2007.5 Dodge Ram 3500 6.7 Cummins so much!! I have learned a shit ton and have saved thousands of dollars in labour costs, I just really want to thank you for sharing your knowledge in such a friendly and exactly to the point way with a bit of humour, today is the dodges day thermostat change, love the Cummins the reason why so easy to work on when needed....

[@belikeshanana]

I'm very thankful that there is someone like you out there sharing this information. Thank you.

[@coolbluelights]

I never knew about that little air valve having to face up and i've changed a lot of thermostats. Thanks Eric!

[@EVAN-re2yo]

thanks for ruin people car

[@Lyno10851]

You never knew why peoples head gaskets would go bad after you messed with them lol.

[@coolbluelights]

@@EVAN-re2yo I only work on my own cars so...

[@user-jt6ph2fs7w]

@@EVAN-re2yo That's tough 😂🙆🏾😂

[@user-jt6ph2fs7w]

@@Lyno10851 🤣🤣

[@lillightning06heh20]

I love thermostats. They’re little and cute but they play such a big role. And they’re springy when warm and they close up when cold. My boyfriend is now calling me a thermostat. For some reason the thermostat was the main thing I remembered from school house. And now I know why. 😂 Anywyas, I love your videos. They help me big time in learning more about vehicles and being a wrench monkey.

[@lawnerddownunder3461]

This is the best comment on an auto repair video ever 😊

[@Zeppelin6882]

Thermostats the gatekeepers of the cooling system...quite good explanation. Finally, I'm gonna install the gatekeeper buddy in my Subaru this weekend. My car's run out of it for several years. Thanks for sharing this video

[@ramonrivera5467]

My question was which side was up and which side down but hearing and watching the program I learned a lot more thanks for the info

[@firstgentrucking207]

Spring side to the hot water usually down

[@doupnetwork]

Thanks. Im sure my issue is a stuck closed thermostat now. Already bought one but your explanation was the best I have heard so far

[@johnchristy3820]

Thank you Eric. I never realized that air in the cooling system would make the engine overheat, but I found out and now the engine runs nicely after I got he air out. Thanks again

[@stinkynene]

Eric, I've been following you for a very long time and just want to say thank you once again for all your detailed information! And your dedication in making thus vids possible and available. Thank you!!!!

[@raquelzevallos830]

Eric you rock! Every time I decide to DIY fix my car your videos are always the most helpful.

[@evenrognlid1022]

8:52 -Water is not a particularly good CONDUCTOR of heat, but it is one of the best substances for heat CAPACITY.

[@the_jist2322]

yeah, was about to say this, it transfers heat through convection

[@jasonbaker2065]

Hope this guys is doing good!! He’s helped me along a lot! Merry Christmas!!

[@Diego02567]

Your videos are so useful i didnt go to automtive school but viewing your videos have helped build my race/daily car on my own. Feel so accomplished.😆 Thanks. Next job is Aluminum radiator, high speed fans, and performance thermostat.

[@PterippiGaming]

Thank you. This video helped me a lot in understanding how engine temperature regulation is supposed to work and how the problems that we have with our car can be perfectly explained by a stuck thermostat.

[@RavenCyclone]

My most trusted mechanic on and offline.

[@WouterB76]

I already knew how thermostats work, just watched this video because i like Eric explaining it.

[@automixdiagnostics]

this guy has a wealth of knowledge I have been following him for awhile now kinda like sandbagging but just now would like to big him up he has unknowingly helped with his knowledge sharing thank for giving of you self

[@stevefiorito5379]

Great job Eric, you covered just about everything. I like to suspend a thermostat in the warming water rather that let it sit on the bottom, as you suggested. I think that the metal bottom is much hotter than the water and heat can travel through the the metal into the thermostat by conduction and open the thermostat at a lower relative water temperature. Keep them coming.

[@9058577349]

Thanks Eric great video clip explaining the importance of a proper running thermostat. I passed the linnk to this video to my daughter she had many questions. I just bought an OEM thermostat for her 2007 Honda civic I did a visual comparison with a MotoRad 2328-180 the Honda thermostat appeared to be better constructed and it included a gasket. Again many thanks!

[@ryansauto93]

Great video Eric! Glad you mentioned the importance of OE vs aftermarket thermostats. I've found out that this is especially important on Subaru's. An aftermarket t-stat can have the same temperature rating but will be a very different design and have different flow rate and other characteristics. Using an OE thermostat helps avoid tons of problems.

[@m4rk2o]

Eric you are the man! Don't you think it's crazy that I just put one of your drum brake replacement videos to extremely good use, and at the time of that video you were celebrating your 100th subscriber, and today you have over 375,000! You post extremely useful and relevant information and I hope this is just the beginning for you man! You're a really cool dude and I look forward to seeing your new videos all the time even if they don't necessarily apply to my particular vehicle, It's cool to have that new knowledge. Keep it going man and know that you are greatly appreciated and have truly inspired me to do things myself and to STAY DIRTY! Take care man!

[@terinamcgregor308]

I just learned something so cool with testing the thermostat awesome

[@Olds_Pwr]

I have always read, 3.25 degrees F for every pound of pressure. Close enough to 2 degrees F though. I have never been able to find the information at what temperature one would close though. I don't think many vehicle manufactures make their products, they just buy parts and assemble them to make a vehicle. Meaning these two thermostats, could have been made by the same company, even though they look entirely different for the same vehicle. I am sure you know that these cheaper priced infrared thermometers are only good at temperature differences since you cannot adjust the emissivity level as the more expensive ones. As perfect as these thermostats work, I have read that automakers are using an Electrically Assisted Thermostat in vehicles now. Love your videos.

[@paddan426]

EricTheCarGuy my first car had a 3:rd way that thermostat could break down actually. I had to almost force the mechanic of mine to change it. What had happened (that he found when he did change it) was that spring had cracked into 2 peaces. So there was a very small "spring" left, but it opened and closed really randomly. The thermostat was apparently quite deep in the engine on that car, hence why he didnt want to replace it at first. But it was the only fault... Car was a 1989 626 Mazda 3door GTi coupe with a 2.0l 16v V4. Fun little car :)

[@EpicGamer440]

Learned so much and answered so many questions in this video. Wish we had more eric the car guys on youtube

[@265KONING]

Thanks for the taking the time to posting the video on Thermostat. Error code on my Mazda is pointing to thermostat issue, but do not notice any difference in engine temp and/or cabin heat. Will replace as advise by my mechanic

[@TopsailKayakFishing]

Hey Eric. I have a 1989 22RE Toyota Pickup DLX 4x4 5spd, no modifications done to it aside from suspension (no lift, 31' tires). I have a very slight intermittent miss, only at idle. After the engine warms up for 15-20 mins, you can notice a putt in the exhaust and the engine twitches a little each time. I have replaced the distributor cap and rotor button, spark plugs and wires, gapped spark plugs to OEM recommendation, timing chain replaced in last 200 miles (thought that would fix it, old guides were broken to bits.), it is timed right on the money. I did a seafoam treatment by feeding it into the throttle body through the brake booster, and treated a full tank of gas with BG 44k. I've listened to each of the injectors, they are ticking nicely. The radiator was replaced at the time the timing chain was done, the water pump and radiator fan were replaced ~2000 miles ago. The truck runs pretty good once you get it moving, it has good pull when I am running around off road and on the highway. But that dang miss at idle it driving me crazy, and it seems like it is getting 10-14 MPG, which is really low even for a 22RE 4X4 on the recommended 31' tires. I'm not sure where the temp guage should sit on these, but it seems to hang around 1/4 of the gauge at all times. Possibly t-stat always stuck open? I was thinking of going for the big boys next, MAF and TPS, but those prices if I am wrong... Would the thermostat lead to these kind of symptoms? Thanks in advance!

[@RealCadde]

Thank you for yet another excellent video! Please keep making these small videos explaining all the parts of a vehicle and especially it's engine. Even re-visits would be nice to hear what you have to add on previous ones and also get the higher quality footage since then. You have become much better at your editing and recording.

[@lindytown]

Great video. Very helpful to learn about this stuff, especially for women, so we can understand what the repair guys are telling us. Thanks!

[@josecuevas8602]

Tip: observe the water while heating, when it has small bubbles just before the waters color changes to w white-ish tint, it's temp. is under 180°F . When it color has a white-is tint it's over 180° F . When the water is boiling, it dosen't have to be a violent boil, just lightly boiling it's @ 212° F or 100° C ... boiling violent or lightly it's 212° F Becuase it's the max temp. which water boiling [ it's actually for Chemically pure water] but tap water is close enough for the test. the same goes for its freezing point 32° F or 0° C . One more thing Eric, Thermometer's like the the one shown in your video are calibrateable. If you turn it up side down you would see that at the opposite side of the dial it has a hex. This hex is for calibration, the process if fairy simple... you need a glass of ice water [ preferred a foam coffee cup, becuase it insulation properties ]. Then insert thermometer and wait about 2 to 5 min. [ 5 min mostly an over kill ]. The thermometer should be at 32 °F , if not ajust with wrench and re-check thermometer, if not at 32 ° F , then re-ajust until at 32° F. You can also, do this with boiling water. but be careful not to burn your self. I my self have 2 thermometers on calibrated with ice-water and the other with boiling water, this is because am picky, this is because their is a discretion in temp. due to the thermometer is a mechanical device. but ice water is close enough. Also, the temperature at which water boils differs with altitude. Ok, Eric, I think I have written enough, and you can take it from here... Oh o e more thing, You can check the accuracy of you DVOM [those equipped w/a temp. Probe you will find that most of of them are not accurate [ personally I haven't found one to be correct, In bought tested w/ice-water or boiling water. Also, ice-water is always @ 32° F / 0 °C . 32° F / 0° C is the temperature where water is found as a solid an a liquid... Very good video.. 👍

[@williamstevens4824]

Excellent demonstration and info on thermostats and how they're suppose to work. Great video. Thank you.

[@katien1684]

Eric once again you really know your stuff and more importantly your presentation as a teacher is the reason why you are so popular in my opinion. I made some suggestions on the previous video which was how to identify the causes for overheating. if you review it perhaps you'll see what it was that I made reference to i.e. lighting and sound. However this video on thermostats was A. OK clear with sound especially..notice that you did not move your head in different directions and the camera stayed focused on you without having to move. your presentation was perfect! I will be a new subscriber...erin

[@jajabor01010101]

Eric>> I plan to do this year on the 'basics'. Instead of step by step repair videos, these cover the basic operation of the common components you deal with in auto repair. I hope you enjoy watching them as much as I'm enjoying making them.

[@abodao]

Excellent-So much detail, operating temp, pressurized systems, and on and on. Thank You

[@johnwrench4speed]

Interesting video. A couple of points; Many times with an ECT code, it is not the sensor, but the thermostat. In connection with aftermarket versus OEM thermostats, my experience, especially with a thermostat that is integrated with a plastic thermostat housing (e.g., Mazda), if one uses a new aftermarket part it will set an ECT code, however, using a OEM unit will not. Finally, according to the book Automotive Service, Inspection, Maintenance and Repair, Third Edition, by Tim Gilles, "...each pound of pressure on the coolant raises its boiling point by about 3°F."

[@joshgrami]

As always, very thorough and informational. Thanks!

[@binjm3a]

Informative videos are always good . Please do more of these videos .

[@lisnelballista5514]

Im watching all your videos and im 17 year old girl who wants to know everything and your awsome the way you explain things cant be easyer:)

[@silkytp789]

Any commentary on Fail-Safe Thermostats? They are designed to fail in the OPEN position so that when your thermostat does fail, the risk of engine damage is limited.

[@froglegs4910]

Nowadays automobile engineers smart enough than old days mechanicals! Temp sensor will tells the control board to shut off for proventing overheating damage of engine !

[@DominusTecum316]

I am about to replace my thermostat with a Everlast name brand because it stays open when it fails. Not aware of what other ones have that capacity but my local Autozone confirmed it for me. Edit: Name brand is Fail-Safe. Not Everlast.

[@harveyhandbanana]

Eric your explanations are always dead on and are super helpful

[@DaCoder]

Top right of frame: *Eric's Grammy Award* Never knew you got a trophy Eric!

[@moneygeewtee]

And I thought I understood the functionality of the thermostat....Thanks Eric!

[@Turbo4Joe363]

The water will pull the super hot torch heat away quickly, but it looks like your cookie tin is about to burn through the bottom. Thanks for the thermostat test and comparison!

[@acharyajamesoermannspeaker6563]

excellent. I've used thermostats that I'm not sure they would be 'aftermarket', but are the sort of generic fits all parts available. They also opened quicker and had much lighter duty springs than the 20 year old one that was installed. I think this is a good thing to open earlier all things considered.

[@RedrooAU]

You are the guy man...had heating problem took your advice...now all good... Redroo from Sydney Australia... cheers mate:

[@klc317]

Yes. Video of bleeding a cooling system with expansion tank as opposed to radiator cap would be useful.

[@DJDevon3]

Excellent video on thermostats.

[@CeasarEdroma]

Impressive learning even after 10 years. Thumbs up

[@dtrain138]

Great video. Thanks. I keep hearing, "Grab a thermostat, it's only $5-$10 bucks!" But I've developed a habit, since I have the best mechanic in the world, of asking if there's a way to test it. Thanks for your input into my tenure at KZbin University. Learning a lot.

[@theviperkiller-io5ji]

mine does both overheat and no hot air thanks eric the car guy love the videos

[@acjoeboxer]

Greg Rogers mine does too, how did you fix it?

[@theviperkiller-io5ji]

Alison Johnson I have a bad thermostat so check your radiator to c if it's leaking and did u ever have a water pump replacement?

[@danlc95]

Greg Rogers Mine too!

[@theviperkiller-io5ji]

Overheat engine

[@danlc95]

Greg Rogers - My code reads bad thermostat, but I might have a leak too. Takes forever to heat up, slightly heats to where the gage is at the 12 o' clock position.

[@amm-vb4ne]

יHI ERIC I HAVE JUST SRARTED LEARNING AUTOTRONICS AND YOUR VIDEOS HELP ME A LOT THANK YOU VERY MUCH WAITING FOR MORE NEW VIDEOS .

[@jilano6376]

Hey Eric. Please announce when you have the video on the expansion tank bleed. Had to wrestle my 05 Silverado with air block and it was no fun. Love your vids not only are they informative but they are straight to the point and easy to follow. Cheers!

[@spelunkerd]

Yeah, a few more examples of modern cars with expansion tanks and no rad cap would be worthwhile. Also, I'd be interested in the controls and valves for flow through the heater core. I had always thought that heat there was only regulated on the air flow side of the equation. Great video, Eric.

[@elNenio]

good demostration Eric! one thing i can tell you about these thermostat.. These aftermarket ones tends to corrodes faster than the original oem ones.. you can see how thin these metals are in the aftermarket.. but again.. if a person owns a car and highly maintains his vehicles.. he or she must replace this thing every 3-4 years when going for coolant flush.. but i dont understand why not replaced it with OEM since it will only cost you 5-10 dollars different over aftermarket.. oem honda thermostat = about 32-35 bucks Aftermarket = 22 - 26 bucks.. knowing your thermostat will not fail in the future = Priceless :D

[@2idiot4u]

Funny, got the same cake drums from Collin Street Bakery in my shed. My grandpa and grandma used to live in Toronto and Florida. They got back to Holland - where I live too - end '70s, and they often used to send something of Collin Street Bakery to me. Brings back memories. ^^

[@chhathchhuong6281]

Thank you so much, ERIC your Video is very good to explain the whole detail. God Blessed you all.

[@smirhash]

have always enjoyed and learnt a lot watching your videos. :) sincere thanks.

[@williegillie5712]

Something you could have mentioned is what can cause premature failure of a thermostat? So many times during the winter a person starts their car to let it warm up. In itself it’s not a bad idea. However if you leave you car sitting outside for 30 min or more the thermostat opens at 192 or whatever its specs say its supposed to open. After opening the water continues to warm inside the engine to the coolant temp switch temperature which can be over 230 degrees. This can cause hyper extension of spring and over extension of the valve. What eventually begins to happen is the thermostat won’t close completely or may stick in a tilted position unable to close completely. An easy solution is to replace the faulty thermostat once it goes bad. So if you notice your car not getting warm enough it could be because it has been warmed up for long periods of time causing premature failure of the thermostat.

[@ethan073]

Great video, very informative and you explain things really well! I didn't understand exactly how vehicle thermostats worked or why they were important beyond giving a display of engine temp on the dash meter before watching this video. I'm off to watch your video on bleeding air from the system - trying to figure out why I'm overheating! I'll look for your channel & website for my car curiosities in the future. Thanks again!

[@oya691]

on my 99 dodge ram 1500 i had no heat when i bought it i determined that my thermostat was bad whe my engine would not get to operating temp so today in class i put a new thermosat in and did a coolant flush and now i have great heat

[@balloney2175]

I hope you are saying the truth.

[@dionysus2006]

Great video ! This really showed how a thermostat works.

[@AADVENT]

When you're thermostat close too slow, your engine will run cold. Just changed mine, tested and it was opening but closing way to slow causing the engine to run way too cold. The temperature needle never pass the 1/4 mark and goes way down when driving on the highway. Installed a new thermostat and the temp gauge needle is solid at half way mark and doesn't move at all, either on the highway or city driving. A slow closing thermostat is as bad as having a thermostat that is stuck open.

[@robertbawden1702]

exellent value mate. must viewing for an aussie mechanic.

[@Seth_Michael_Hernandez]

Your videos are all so good. Thanks - from all of us.

[@fireman131103]

Otherwise absolutely love your videos great guy I've been a mechanic personally 15 years

[@franhecha]

Thanks Eric, Awesome and useful videos. I didnt even know about air in cooling system could overheat the car. This is very interesting!!! Francisco From Costa Rica.

[@EJConrad]

Great Vid! Just bought and aftermarket one myself. I always test the old and new before installing. GJ!

[@RobB_VK6ES]

With the valve opening and closing speeds I tend to favour the one that reacted fastest, in this case the aftermaket ver. Theoretically this means closer temp control of the running engine. This of course indicates nothing about the long term function and build quality. It should also be pointed out operation of the thermostat is not just for the warm up period but it should actually modulate the coolant flow all the time correcting the cooling effect for ambient temp, engine load, and as others have found blockages in the radiator plus a host of other variables.

[@patagualian]

Spot on Rob. Here in Chile, every mechanic (debatable) throws out the 'stat at any sign of a coolant problem. I argue with them that they must know something every vehicle manufacturer in the world does not know. (They don't do sarcasm.) Also, as you suggest, with no stat in there, the water will spend less time in the radiator & thus not be efficiently cooled before returning to the engine. Result: Overheating! The word you used is the one I was searching for: "modulate" ...Perfect! (Another one is their belief that tap water is fine in our temperate climate! Yet simple Agua-Verde is dirt cheap & contains good anti-corrosion components. I've seen 5 year vehicles with shocking corrosion throughout the cooling system.)

[@LOTPOR0402]

Reaction time doesn't really matter ,what matters is it opens it closes and opens at the right temp

[@therealuncleevil]

Eric, how do you feel about drilling a small hole into thermostats that do not have the bleed hole normally?

[@sombora]

Eric, you mentioned two things that could go wrong with a thermostat. I believe there could be a third. Some thermostats come with a rubber seal on the upper frame. This functions as a gasket for the thermostat housing, where in some cars (like my 95 legacy) the thermostat housing itself does not have its own gasket. When this seal gets thin and hard, or worn, I believe a leak could develop. In my '95 legacy the bottom hose leaked from the thermostat housing. When I replaced the thermostat the leak went away.

[@JacobFrey]

Eric, you are the man.

[@IMeleemaker]

I always test new thermostats before installing them....Best way I have found is to get a old coffee pot....fill it up and set the burner on high....usually gets it to 200 degrees or so(which is optimal coffee making temperatures) and drop them in. I replaced one and it came back...and back.... Took 3 NEW thermostats before I got one that worked right. After I took it apart a second time, I started bench testing them. Just because you get a new part, doesn't mean it is going to work.

[@rajsekhon]

Excellent! Video, as allays. Been trying to fix an issue with my Audi A4 related to cabin heating and overheat. Total pain in the ass!

[@javiervaldez7614]

Thank you very much for sharing such important videos for the proper maintenance of our cars, Guy, we would like to in the future were to put subtitles in Spanish, for all your Latino audience that is much, Thanks

[@jmcenterprises9591]

Good video. I have a 2005 Cavalier, starting to run hot. Thermostat is under the exhaust manifold-not looking forward to replacing it.

[@marked4death076]

Shit! Haha 2002 cav i got and now its running hot.....thanks for the warning haha

[@MichelLinschoten]

Great test! Mine opens whenever my gauge is well over 200F (s10 chevy 1996 4.3l) so i guess i will be replacing mine soon!

[@BBugnOut]

Great job explaining and demonstrating the function and operation of a thermostat.

[@jefffleck5196]

As always a nice charismatic video thanks Eric

[@clapton924]

Cool video, Erick! Great info and demonstration!

[@Crazieboy86]

I love the info thanks and if its not hard for you I also like to see tear down videos such as alternators starters you know just to see what's inside and see how it works

[@davidlqvist6679]

I'm impressed, good job professor Eric ;-)

[@HummyHitVTEC]

Eric, Just watched the "How To Bleed a Cooling System" video in the description. I noticed that some, if not most Civic's and Integra's from 1996-2001 stopped coming with coolant bleeders on the upper radiator hose pipe housing. Also the OEM Part for 1992-1995 Civic's radiator hose housings with bleeder has been superseded to a new housing with the bleeder absent... How do I bleed my coolant with no bleeder???

[@ericthecarguy]

As pointed out in the video, you don't need the bleeder to remove the air form the system. It's only there to make filling the system easier. The procedure is the same, you just skip the step with the bleeder.

[@CigzMuch]

Great video Eric. Now how does running a cooler thermostats or hotter one effect an engine? Thank you

[@sanoekaaihue2411]

Thank you for this! Was having problems with my 98 jeep cherokee's cooling system

[@ConkersBFDN64]

There's nothing wrong with some aftermarket thermostats. I've always gone aftermarket, and compared them. Stant is a good example because they have a standard version, and a Superstat version. The standard is pretty inexpensive and has many visual differences like the one in the video, looks cheaper. Stant's superstat is nearly identical to the (STC brand) oem. And I believe it works a little better when it comes to closing at the right time, and acting quicker. I have used both. I'm pretty impressed with the superstat's though.

[@MiguelHernandez-qi4dn]

Thanks man! Appreciate your videos helped me out 3 times now. Appreciate your work.

[@aaronajbird07]

nice video man, figured out what was up with my Thermostat, nothing was wrong with it haha, 14 year old thermostat perfectly fine but the rubber seal is a little cracked but no biggy :) next is the bleed the air out before I cruise around which is pree easy

[@zacharyanderson7830]

One issue I had was a the previous owner of the car used a silicon seal around the gasket assuming it would seal better. Instead what it did was cause a slight build up of gunk behind the thermostat that swelled in the water causing my thermostat to give unusual operation. My car was having the most random overheating I've ever seen. Sometimes it would over heat often sometimes it wouldn't overheat for weeks

[@rigostar14]

can you do a video on how to change your oxygen sensors on a 2003 JEEP Grand Cherokee ?

[@Panzer1981vtr1000sp1]

Hey Eric, pls make a video on how to bleed a system like the BMW's have were the expansion tank is in the cooling loop as you said in this video. BMW says that this system is "auto-bleeding" itself in use but you have to bleed it first after a coolant swap etc. This would be awesome! Thanks for your great videos! Keep up the good work! Greetings from Germany

[@kampdog]

Thanks for the video. I just replaced my thermostat in my 2003 Ford Crown vic. Apparently there was no o ring on the housing cause now I have a minor leak. Car intermittently over heating as result. Going to tear it down tomorrow and put an o ring on it. Hoping that solves all my problem. It has used a gallon of coolant in less than a week as a result.

[@arnomaas6452]

excellent video ! It can't be more explanatory than that !

[@HannahMwangi-ln7im]

Thanks it opens when the water is warm and it close when the water is cold l got it

[@mikewazowski6588]

I love every video that you post :)

[@gilmargiron9171]

THANKS FOR SHARING WHAT YOU KNOW WITH US. THE TIME WATCHING THIS VIDEO REALLY WORTH IT. I DON'T KNOW HOW MUCH MONEY YOU HELP ME TO SAVE. BUT IT MEANS A LOT TO ME.

[@bayrongonzales3262]

Great Video, I'm about to replace my thermostat (2007 Mazda 3 2.3) as I got a check engine light indicating the Coolant Temperature is not reaching the the operational temp in the designate time. I would think the the thermostat is not closing properly.

[@mclarry76]

Excellent explanation Eric, great video!