Temperature Gauge Inoperative - A/C Off - P0128 Thermostat Temperature Below Threshold

[@wphh7272]

About the best damned automotive troubleshooting KZbin video I've ever seen. Instead of just throwing parts at it, you diagnosed and pinpointed this problem in real time. Thank you, I have subscribed!

[@johnf.lavelle8192]

This guy is smart. My thermostat o ring gasket was smashed in there. It was causing the ac and fans to malfunction. I Change thermostat and gasket, took it to the auto part store and cleared all the codes. Added a can of freon and its working as it should. Thanks Hektor! Great video.

[@embrj1453]

Best video on the subject, not only you fixed the problem but you also explained something that made no sense to me that if the thermostat was stuck open i should see at least some temperature raising...

[@dannycalk8051]

You seem to be a good mechanic, and know what you're talking about, enjoyed the vid.

[@HomieHektor]

Yup, if the ECM detects a fault with the cooling system, then you’ll have these symptoms: inoperative gauge, ACOFF message, and no AC. Weird but true 👍🏼

[@ramonhernandez2218]

I have a 2008 Isuzu i-290 which is the same as the Chevy Colorado and GMC Canyon. The engine temperature gage is not functioning. Now that I watched this video, I will replace the engine temperature sensor and the thermostat. This will also save me money by not taking my vehicle to a shop. Thank You for showing an excellent method of diagnosis of the engine system. Great Job!

[@HomieHektor]

Ramon Hernandez Orale, Gald it helped you out Homie 🙌🏼

[@gregrener5260]

Hektor, thanks so much for the awesome troubleshooting and repair video! My 2009 GMC Canyon had the exact same symptoms as yours, and replacing the thermostat fixed it! I never would have thought that a bad thermostat could be the cause of the problem, but inspecting the old thermostat showed that it had the exact same gasket problem you pictured in your video. Thanks for sharing!

[@MarloSoBalJr]

Chevy Colorados has this bad tendency of getting the thermostat stuck/pinned. Seeing this video helps for me to pass my emissions test in MD. Took it to a shop for a diagnostic, wanted to charge $600 (plus labor) when really it's just two things I can DIY that'll cost me only about ~$200. Thanks a lot Hektor!

[@HomieHektor]

MarloSoBalJr Heck Yeah, you’re welcome bro, thanks for subscribing 👍🏼

[@phillipgurney1402]

Alright Hektor! I have a 2008 trailblazer doing the same thing minus the no a/c light. I do believe you just steered me to the correct fix! Thanks Homie! Thumbs up! Great vid!

[@HomieHektor]

Phillip Gurney No problem, hope it helps you out 👍🏼

[@nancyvandenboomen984]

Good video, I got a '08 Colorado, bought used with a lot of issues. These videos are saving me money Thank you

[@HomieHektor]

Nancy VandenBoomen You are welcome...

[@BarkeyJack]

Well done Hektor, this is exactly the problem I needed to cure and your video was just the ticket, much appreciated.

[@HomieHektor]

BarkeyJack Glad it helped out. 👍🏼

[@usiviopugh4566]

Excellent Work young man thanks for the very helpful info. My 2014 Cruze 1.8 is having the very same issue Loud cooling fan No A/C Engine does not run very warm at all, coolant temp indicator reads zero. Thermostat is on back order from GM in my area.

[@michaelt6265]

Same thing mines doing...Thermostat needle stuck at bottom and AC off..but didn't notice if AC was working or not coz its winter lol😆...Also my engine light is on..Thanks for the video..Now i have an idea of what it could be before taking it in to be checked.👍👍

[@thomazz1976]

Good to see mechanics not ripping people off. Thanks for the video.

[@HomieHektor]

Daniel Costa that’s how it should be, thanks for subscribing 👍🏼

[@bencll]

Thanks brother, changing mine today.. Edit 12-24-2024, i also changed the temperature control sensor, it's next to the thermostat and the thermostat has to be removed to access it anyway, it was difficult to get a 15mill wrench on the sensor but got it just enough to loosen, then I used curved needle nose plyers to loosen all the way along with a large screwdriver to twist it, put the new one in the same way, I was careful not to break the plastic wire connector. This is my second time this year replacing the thermostat, hopefully changing the sensor helps.

[@robrisner2267]

My colorado will display ac off..and I notice the temp Guage won't read..it just stays down..but that's only after using the sc or hwat..but then it will.come back.on

[@Nick-uf1cw]

Video still holds up homie, thanks for the tips on troubleshooting sensor connection 💪

[@anthonymartinez75]

Great troubleshooting; video was exactly what I was looking for 👊🏼

[@HomieHektor]

Anthony Martinez Glad it helped Homie, don't forget to subscribe 👊🏼 more videos on the way

[@anahihg616]

@@HomieHektor on spanish full resumen pls

[@HomieHektor]

ANAHi HG si esta bien 👍🏼

[@stokley5600]

Thanks for the video. That helps me to know what I'm facing when going to the mechanic!!!

[@jowen9402]

Excellent video and explanation. I want one of those scanners.

[@johngilley3518]

Great video 👍, very knowledgeable approach to solving the issue.

[@mrsully21]

This is the exact same thing that happened to my Chevy equinox 2008 thanks man.

[@clintonstephan5134]

Great video and explanation! Very thorough.

[@iampapa318]

Well done!! My hummer h3 just threw that P0128 code today.

[@Vaderdad]

What was the fix?

[@iampapa318]

@@Vaderdad The thermostat (stuck open) was not letting the engine get up to temperature. The computer then shut down the AC to prevent damage to the engine.

[@Vaderdad]

@@iampapa318 Well good news. I just removed and replaced my thermostat with a new one. Engine temp is back to normal. But my AC compressor still won't engage. What do you guys recommend?

[@iampapa318]

@@Vaderdad Get a code reader, doesn't have to be an expensive one and do a code reset, very simple process! Should take care of your problem!!!

[@HectorLopez-fq2jt]

Thanks big dogg. My 09 Colorado just did the same. Going to follow the steps and change out the stat as well.

[@Vaderdad]

Hello @homiehektor. My Hummer H3 has a similar problem. I will confirm again on your this videos post after I do an R&R on the stuck open thermostat. Wish someone would pay me to work on my car. Symptoms that made me take a closer look: Excessive vibrations at idle, smell of gas and oil when I turn on the blower motor inside the cabin, lacking torque and acceleration, radiator feels hotter than normal, AC compressor not engaging. So far I have discovered a few of the problems. I would not have found them if I did not remove the Intake Manifold. What I found was: A positive valve cover dirty air tube was nearly melted by years and miles of oil, fumes, and corrosion, Cylinder 4's Ignition Coil connectors completely broke, Either I broke it or when I was reaching and leaning on the engine to reach the ECT or my neighbor broke it when he leaned over on it. Well after 230,000 miles, it might be time to replace those coils anyways. The ECT seems okay based on my Ohms test but it's not very conclusive. The gauge does show about 1/3rd way to max coolant temp. But it is still lower than it was way the AC was working last week. More on this as I replace the thermostat next.

[@66Apostle]

Thanks as this is exactly what was wrong with my 2009 Chevy Colorado, you explained that so perfect you greatly appreciated.

[@HomieHektor]

Suprina Ford Gkad it helped you out, thanks for subscribing 🙏🏼

[@galarzar16]

You are a great troubleshooter!! Keep the good work and honesty!

[@zoakhi]

My temperature gauge was working intermittently sometime it works sometime it doesn't and whenever the gauge doesn't work the AC doesn't work either . At first I had replaced the thermostat almost 9 Months ago I had the same problem with the AC is not working and the windows don't go down the car was never overheat. Two weeks ago I had replaced the coolant temperature sensor and the thermostat, the problem is still not resolved. Need your help please.

[@jasonmackey7872]

Following change my temperature sensors change the thermostat and the water pump and it still says this

[@stiercreations]

@@jasonmackey7872 probably a little too late now but if you remove the positive cable to your battery for about 10 seconds and replace it, it should reset the computer where it reads it right and you'll have A/C. Of course this isn't a permanent fix but at least you can have A/C until you find a permanent fix!

[@willdwyer6782]

You should be getting a check engine light and a p0128 code from the OBD port if the thermostat or coolant temperature sensor are bad. The computer expects the coolant to reach operating temperature within a certain amount of time. If it takes too long to warm up, for example if the thermostat is stuck open, it'll throw a p0128 even if the coolant temperature sensor is good. When the computer senses a cooling system fault, it will disable the AC compressor clutch to reduce engine load and lower the likelihood of overheating.

[@mikey13b]

Do you know what the minimum operating temperature is for it to not throw a code? And do you know what the timeframe is that this must be reached? Thanks!

[@Vaderdad]

Well fuck my life. I'll be damned if a computer tells me when I can turn on my AC or off. I'll be damned. Terminator-Cyberdyne shit happening right der.

[@Fryinberg]

Thats exactly what just happened to my 08 Colorado . 2.9 liter 4 cyl. That thermostat looks like a pain to change

[@jovanizooted2552]

Finally the solution to my 08 Colorado🙌🏻🙌🏻

[@efrainavena2672]

you are a genious mi friend, i like the way you explained step by step

[@rubensaucedo4118]

Good video my friend. My sisters Colorado has the same symptoms. Guage always reads cold and the AC-off warning is showing on the cluster. You did say in the beginning of your video that you didn't think it would be an open thermostat because the temp-gauge wouldn't budge and if it was an open thermostat the guage would have come up at least a little bit. So I think even you learned something from your video Hektor. In any regards you posted a great video that will be helpful in my diagnosing my sisters Colorado. Thanks Homie!

[@HomieHektor]

Ruben Saucedo I did say that, did some research and figured it out. So I had to share it 👍🏼

[@pafischer85]

This video was very helpful! Thanks!

[@SaMuRa1HaCK95]

Same thing happen to my car I verified sensor with multimeter and got the correct ohm reading for the coolent temp and was getting 5vdc from computer so I knew it wasn't that but the wierdest thing of this whole situation is why does the gauge on the cluster go out?? And if you undo battery cables it resets everything. Is the car computer system just smart enough to drop out guage on dash like that when thermostat isn't working properly?

[@JMTZA30]

Hector I noticed my acc dont work on my 2005 chevy Colorado Ls and my temperature gauge dont reach the normal temperature??? You think is the thermostat?

[@amalrashad15667]

Thank you very much for the explanation your spot on

[@thedudeofshaving1749]

That was a good video man i would have never figured that out . A stuck open thermostat.....fuuck lol

[@Cystus]

Thanks for the walk through. Subscribed

[@themechanicla994]

Very good information, and clearing everything up at the end.

[@HomieHektor]

The MechanicLA Thanks you 🙏🏼

[@undeadmonkey9122]

I have a similar issue with my 08 colorado, I5. Temp gauge reads lower then normal. Changed T-stat about 5 years ago when I saw it running way low. A week ago the gauge moved then zeroed and gave me the AC off code. The next day it went away and temp gauge moves but slow. Coolant moves in radiator and hoses are hot. Was think it was the ETC switch, didn’t know where it was. I’ll try to unplug and clean contacts, it’s dust in west Texas and see if that helps. That’s to the Rona, it will take weeks before a dealer can look at it. Might be the T-stat again. Thanks for the video and Info.

[@sshaqfeh]

Great video expiernced mechanic.. one question is the same problem and symptoms on envoy applies, is the same or similar thermostat is also might be stuck on envoy model 2006.. thanks

[@HomieHektor]

Yes it can be the thermostat, change it reset the computer, and see what happens

[@2pathsB4u]

Yeah, bruv. Messin with a 2018 Colorado. Sir GreyGreen. Good truck, but sheesh. Missin Toyos. Not sure still , sensor/ thermostat. Haven’t tried AC yet. Full heat tho. Winter. You really Bring it, homie!

[@2pathsB4u]

Your scReens are Dope

[@2pathsB4u]

Mad screenshots of your screenz

[@2pathsB4u]

Hopefully same layout 🛶💨🦅

[@julioreyes869]

This homie know his shit

[@Jflowboston1]

I got same symptomps on my 2009 Canyon 2.9L I replace thermostat and it's running perfect again!

[@frankmtech3766]

Tell the customer just open the windows and put a bag of ice between their legs 😂😂😂 Great video bro! 👍👍👍👍

[@HomieHektor]

Frank M Tech I would but then that ice will melt, and we're gonna have a Moldy Colorado 😎

[@partidocorpus4596]

The Homie Hektor so i have an 2008 h3 has the same engine but even in cold weather it runs hot in between the middle and 3/4 but if im in the freeway it goes back to the middle but when i turn the ac on and stop somewhere it goes all the way to 3/4 is that normal or what can i do to it i already change the thermostat

[@billmck12345]

good vid homie hector. I see you using a resistor, nothing bad by any means, but I use the ATS Resistance Decade Box from aeswave for this type of diagnosis, its a godsend... you'll thank me later.....once again good vid ..... specs on that decade box are 1ohm to 11+megaohm inc @ 1ohm steps... yea you heard that right 1ohm step from 1 to 11m+

[@luisfruelas1]

Thanks for the video very informative appreciated

[@GAZAIRIAN]

thanks well done learned what to check next

[@edmoore3910]

new thermostat in...no lights on yet..however...suddenly the top hose is hot..very hot..bottom hose warm. im thinking radiator is plugged? it dont pressure up at all. and gage shows it running on the warm side of normal. why would it suddenly plug up?

[@HomieHektor]

Ed Moore sounds like a defective thermostat

[@edmoore3910]

@@HomieHektor if so..it would over heat.

[@edmoore3910]

@@HomieHektor heres my thoughts on these f....ing trucks. they suck. chevy sucks..fords suck..dodge suck. were all forced to buy parts that were not stock on the vehicles..thus..causing computers to toss codes in our faces at our cost. my colorado ALWAYS RAN UNDER THE HALFWAY MARK ON TEMP. GAGE. till i installed a new thermostat. now it runs above the middle line im sure in the summer when its 90 out..and im towing my bass boat..its gonna boil over. if that happens..im towing the basterd right to where i bought it and tell them to shove these trucks up their asses fed up with all this bullshit. everyone sits back and takes it..and keeps buying these hunks of high tech bullshit.

[@PhantomLover007]

I had my mechanic replace my thermostat sometime towards the middle of last year because I was getting the same issues. And now it’s doing it again today. I unplugged the sensor and reset the codes and it’s cleared it up. I don’t think I should be having this issue this fast again

[@haroldreyes7549]

At 3;20, you said that it could NOT be the thermostat, because it would not cause the gauge to stay still!! BUT, we learn as life goes on!!!!!!!!!

[@richardfrankhouser3245]

Most of the time, you won't get the AC off warning if the thermostat isn't working.. More than likely it's a temp sensor

[@tonyrodriguez5317]

Great video do these thermostat take some kind of gasket sealer or it’s just the rubber ring on it and no need to add gasket sealer

[@HomieHektor]

Tony Rodriguez just the o-ring, no silicone, gasket maker, or anything like that 👊🏼

[@tonyrodriguez5317]

The Homie Hektor Thank U good Sir I really appreciate it ..!!

[@johns4826]

I have this exact problem intermittently tho.. same model and year..a little different scenario but it comes and goes. It's been more often than not lately.. u think if I changed this part, it would fix it? I dont have a computer to check the ecu either to troubleshoot the cluster so idk

[@HomieHektor]

John S Gove it a try, the thermostat is pretty inexpensive and it’s girly easy to replace. Just clear the codes after the work is done 👍🏼

[@yakovpilipchuk]

radiator fan in colorado 04works all time or not? tank you

[@k.esperanza2390]

All, this was great and I have the same problem, but I also had a thermostat put in and I still have the same code and issue with the gauge

[@damen5309]

I have a question, my 2005 chevy colorado 3.5, ac works, new thermostat, and still some times overheating? Sensor was ok, many people said that this truck r always working like that, is this true? Some times gauge past 3/4 line is not all the time, if u turn on ac start getting hot

[@HomieHektor]

RAFAEL AVINA check your fan, fan clutch, and see if you have coolant circulating. You may have a bad water pump.

[@linkinz28]

Thank you for the video bro, I have been fighting an 09 canyon for over a month with the same problem.will replace the thermostat today, I never got the AC off message when test-driving it but the customer complained of it... I'm sure you don't have the car there anymore but I have the same scan tool and the TFT sensor was always stuck at 32 degrees on the data pid, as well as finding the TFT sensor was causing excessive cycling I pulled the dash and replaced it thinking it would fix it. Would be interested to know if the data pid was just errounous... Thanks again.

[@jeremywilson6801]

Did that work for you, I'm fighting the same thing now on my 2009

[@mazoolmee13]

THANK YOU SO MUCH MAN YOU CREATE

[@robsz8281]

In my car i had same issue with gauge all down. I checked ect sensor was good, but the other way towards the ecm was not getting any reading. Checked wires all to the ecm no break and good. So could it be ecm issue or what else should i check?

[@TheRideKing]

ok, escribo en espanol porque asumo que hablas espanol, tengo exactamente esa colorado 2008. con el termostato en buen funcionamiento la temperatura siempre pasaba de la mitad en el tablero, entonces le mande a abrir unos huequitos al termostato para que pasara el agua directo y no calentara tanto, estoy en venezuela, por lo tanto sabemos que latemperatura aca es calida. desde que se hizo ese trabajo ha funcionado todo bien pero me pasa exactamente lo que explicas en el video, mi solucion hasta los momentos es la siguiente: tengo un scanner portatil conectado al obd2 y desde el tlf me muestra los codigos y puedo borrarlos y vuelve a funcionar el aire, esa fue una solucion, la otra solucion es con un scanner de GM o CHEVROLET y es configurar nuevamente los valores predeterminados del motor de temperatura, eso fue lo que se hizo recientemente y perfecto, solo queria dejar este mensaje para quien quiera hacer lo mismo . Saludos!

[@everardocamacho5063]

Gracias homie buen video, muy buena enseñanza, para los que no sabiamos ese problema, un saludo como siempre, cuando te enfade me dices, pero me gusta ver tus videos ,

[@8lopez4]

I notice that the temperature was pass the middle is that normal

[@billpchajek3744]

I was having the exact issue on my 2008 Equinox . A coolant flush resolved the issue. Maybe gunk in a sensor caused the malfunction?

[@bamafever92]

Hey man first of all thanks for the video it helped me out a lot! I had this same exact issue and I changed out the thermostat my temperature gauge is working now but it’s still showing the check engine light and my ac still isn’t working do I need to go in and clear the code? Or should it go off on its own? Thanks!

[@bradt9350]

They should probably clear... probably after a set amount of cycles within a specified range, but, Try this..... Disconnect the Battery for a little bit.. That clears the codes on most older cars. If not.. Maybe look for a vid on clearing the keep alive memory by jumping the battery cables BUT ONLY while at least one of them have been disconnected from the battery. Autozone used to read your codes for you until the pandemic but some workers tell you, store policy is, not to clear them because then the shop can't look at freeze frame data for troubleshooting afterwards. Ask if they could do it for you anyway if you turn your head... Just disconnect the battery for a few. if the temp gauge works, so will the AC

[@jimwoody3056]

My 2021 had same issue. Changed the thermostat and fixed the issue. Air conditioning worked. Temperature gage worked. Fans no longer ran constantly. There must be an electrical sensor which tells computer to shutdown temp gage and air conditioner. Tells fans to run. The thermostat is purely mechanical, not electrical. So, what is telling the computer to do what it does? Where does the interaction occur between the thermostat and the computer?

[@bigdonutstudio]

This video is a GOD SEND BLESS YOU

[@alexismoreira1217]

1.000 time thanks thanks for yous vídeos

[@mrkttrdr2919]

Need to do this on my 05 coly, how did u get to top thermostat bolt, thanks for posting

[@HomieHektor]

Mark Daniels I believe I used a swivel with a 10mm. I honestly dot remember🤔

[@mrkttrdr2919]

The Homie Hektor that’s whatseen that’s what other posts say, gonna give a try this week, been running 165-170 temp getting intermittent 128 code, should improve mileage , thanks for reply

[@Vaderdad]

So new Update! The good news. I just removed and replaced my thermostat with a new one. Engine temp is back to normal. But my AC compressor still won't engage. What do you guys recommend?

[@scottfgv]

I don't quite understand. If the coolant temperature was still at 186 degrees, why didn't the temperature gauge on the dash reflect that?

[@tonifindley3554]

What's up with the flickering lights on the stereo at about 19 seconds in? My Impala started having thermal housing/sensor issues a couple weeks ago, got a code about the temp being below the threshold. Yesterday, the gauges go haywire and the battery abs and airbag light come on while driving (Yes, I was steering left), and a very worrisome buzzing sound emanated from the entire dash beneath the windshield.

[@zacinnc78]

yo hektor great vid! my gfs 2008 honda fit is throwing this code ...it has no actual temp guage just a dummy light if it overheats .the cold circuit indicator (blue temperature signal )cuts off shortly after getting going down the road and the heater will blow hot air like it should .Could this still be a slightly stuck open thermostat or could it be CTS and how could i test before throwiong parts at it(i dont have a nice diagnostic tool like you have and the thermostat is a PAIN to get to)

[@1hlyGOD]

Great vid bro thanks

[@HomieHektor]

Drews Auto Thanks Homie, appreciate that 🤙🏼

[@retthansel5248]

Hector, I've replaced the temp sensor and thermostat and I still get ac off message and temp gage stop working. What else can I do?

[@HomieHektor]

Clear the codes…Use a scanner to look at data, so you can see what the computer is seeing.

[@retthansel5248]

@@HomieHektor cleared code, works a very short time then ac off message and temp gage drops off again. Have replaced temp sensor, tstat, radiator cap and checked all fuses.

[@retthansel5248]

Codes out at P0128

[@ronclaros]

@@retthansel5248 Not sure if you were able to find out what was wrong with your car. I would say... flush the cooling system: replace with new one (make sure is the correct one... Dex Cool (orange) although there's claims it gums up components and destroys gaskets. So there's a universal one either PINK or Yellow color. Some people also claim that Orange DexCool changes color to pink when you mix with distilled water. I also wonder if you're having a faulty water pump too... this is assuming that your thermostat and temp sensor that you just had replaced were working as they should. Sometimes some of the 3rd party parts are faulty too.

[@retthansel5248]

@@ronclaros Have replaced Tstat again with ACdelco, flushed system, water pump ok. Still codes out and I lose AC and temp gauge. Just can't afford dealer for a "maybe" fix

[@tituss1992]

Having the same problem...but my ac works...haven’t checked it tho...currently at work...notice it when I got to work...is it safe to drive??

[@HomieHektor]

tituss1992 should be safe, just keep an eye on the temperature gauge 🤙🏼

[@alibouazzaoui1059]

@@HomieHektor hello, congratulation on the great job your doing. Having same issue, is it safe to drive it keeping an eye on the temp gauge? Could the thermostat disengage and get stuck in closed, since it is defective?

[@lauragarcia7136]

What can I do with my chevy cobalt, I change the thermostat and it still shows the p0128 code, the ac start blowing warm air, I need your help!!

[@HomieHektor]

Check the rest of the cooling system 👍🏼

[@lauragarcia7136]

@@HomieHektor I took for service about 3 month ago, it was working perfectly, but yes I'll take it to check, thank you!

[@victorrevuelta6348]

I have a 2006 Colorado my temperature driving is around 200 and at stop light idling it goes from 200 to about 206 maybe higher in summer time is this normal?

[@victorgarcia-mm1zh]

thanks for the video help alot👍

[@cobrarsz1]

I'm having the same issue on my 09 civic will definitely change the thermostat.

[@HomieHektor]

cobrarsz1 let me know how it goes 🤙🏼

[@cobrarsz1]

@@HomieHektor definitely will let you know.

[@cobrarsz1]

@@HomieHektor I just replaced the thermostat and the temperature is back to normal but the ac is still blowing warm

[@HomieHektor]

cobrarsz1 might be a separate issue with the A/C

[@cobrarsz1]

@@HomieHektor has to be cause I have replaced the blower motor and ac compressor within a year

[@philh9238]

nice work homie. still usinf the verus with the keys and cable. would be nice to be wireless but to damn much money..

[@HomieHektor]

phil holbrook yeah it's expensive but pretty useful. It's more of a luxury...

[@maddogg3415]

dang bro very informative great job describing

[@cbbolden2331]

The temperature control knob is pointed on red you will get warm air to get cold air turn your temperature control knob counterclockwise to Blue

[@littlenormy]

Will this make your engine harder in fule if it is running cooler?

[@fahimhasnain]

Nice demonstration...✔

[@RonnieYoung-zx8wu]

My temperature gauge works I'm just down the road about a mile drop the cold and the AC works fine in the truck is not overheat can you tell me what's wrong

[@nonialexanderfilms3467]

I have a hummer and gauge goes high when I turn on ac, I replaced the coolant sensor, radiator , water pump, thermostat, clutch fan.. what could be the problem? The ac compressor is new lol... but that just happens when ac is on

[@HomieHektor]

Noni AlexanderFilms when the A/C is on, the A\C fan is supposed to come on as well ( if it has 2 fans) Do you know if this is happening?

[@nonialexanderfilms3467]

It only has one and it turns on, someone told me it could the head gaskets but it only happens when ac is on

[@davidbroome2886]

Very good how to fix and why thanks

[@morganflores401]

Qué tal buen día , una pregunta este problema también podrá deberse a que el sensor de temperatura este dañado ?

[@HomieHektor]

Morgan Flores si tambien es posible, cualquier problema relacionado con el sistema de calientamiento afecta el sistema de aire acondicionado 👊🏼

[@tonyrodriguez5317]

Would U happened to know at what point do U do the timing chain on one of these 3.5 engines I got 189k on it runs strong just wondering

[@matmatarib1878]

Hi sir. Can you give me advice on my chev spark 2008? I have a new coolant temperature sensor and new thermostat installes on my spark. My concern is, when my AC is off my radiator fan goes automatic it kicked on when its 93°c and it is off when its 89°c . But when my AC is ON my radiator fan did not turn off or take a break for a seconds. but my compressor is still automatic. Sorry for my bad english. Need your advice sir. Thank you!

[@ZiggyGood]

Hey man I saw that the truck temperature was higher then half after you were done replacing the thermostat. Is that normal?

[@ZiggyGood]

I subscribed

[@HomieHektor]

Ziggy Perez I’ve done a lot of GM/Chevy cars and they all have the needle I a bit higher than half. So I would say yes.

[@daid638]

Gracias por el video, fue de mucha ayuda.

[@HomieHektor]

Que bueno, Para eso estamos Homie.

[@scottsherman5262]

I just want to kiss you right on your lips...for like, an unconfutable amount of time. I'm dealing with this same intermittent problem on my 2009 Pontiac G6, & I've of course read a bunch of forums, etc., but not until now have I seen the issue diagnosed live & resolved. The coolest part is that you went thru the same reasoning that I did at the beginning of the video, when you say that it's not the thermostat stuck open because that would at least register some temperature on the gauge, but then you realized thru a process of eliminating the other possibilities that it must be the thermostat, & then you realized that it's designed to shut the gauge & AC off when the engine's running too cold. I was going back & forth on what it could be, is it the ECT sensor, the harness for the sensor, simply the thermostat stuck open? I'm going to replace the thermostat this weekend, & if it doesn't fix this intermittent issue, I'm going to find you....and I'm still going to kiss you, because I loved your video. With verbal consent, of course.

[@bio3m]

Fellow mechanic just had the same issue with a chevy cobalt. What scanner you go there?

[@HomieHektor]

Nick a Snap-On Verus Homie

[@ronaldcordova658]

Question?? What's the value of the resistor you use there? Thanks

[@gamingwithhype0423]

What diagnostic scanner are you using?

[@egjdmcivichatch]

Ive replace thermostat, ect sensor, iat sensor i still get the engine hot ac off measage even the dealer ship master tech at chevy sayed he has no idea what it is! Smh 08 chevy tahoe 4.8l i cant find the solution anywhere, shops or forums

[@boreed5734]

I have 2013 Equniox thats doing the exact same thing. Changing the temp sensor did not fix the problem. The code disabling the gauge makes perfect sense. Even driving the car the gauge wouldn't buldge.

[@rockytop4]

There are three temp sensors coolent in coolent out and one in the radiator passenger side

[@danielraymadden]

it would seem like the sensor was defective also since you had no reading after twn minutes wouldnt it be good just to change both.