Ford 2.0L 2.3L 2.5L Engines P0125 P0128 Insufficient Coolant Temp: Thermostat Housing Replacement

[@FordTechMakuloco]

These are the Tools and Parts needed to complete this job: Thermostat Housing Assy (check fitment guide)- amzn.to/2sZIxOr Vacuum Fill Tool (an absolute must on these engines)- amzn.to/2sZzRYo Alternate Cheaper Vacuum Fill Tool- amzn.to/2t6Lu0b Coolant Burping Funnel- amzn.to/2s327Kn Gold Coolant- amzn.to/2rZBUMS or depending on model year OAT Coolant- amzn.to/2t48mgN How to use the Vacuum Fill Tool- kzbin.info/www/bejne/lYimg5areL98a5I How to remove stubborn air pockets from your cooling system- kzbin.info/www/bejne/apjOZauYbsaCnac

[@PalmettoMoon]

FordTechMakuloco A fellow youtuber highly recommended you! I have an 2006 mustang Gt 4.6L coupe hardtop premium edition. I need to know if my transmission is a 5r55w or a 5r55s? I've beat my head against the wall for a week now trying to find this answer. Please help!!!

[@FordTechMakuloco]

It has a 5R55S, I have only seen the 5R55W in some Explorers.

[@PalmettoMoon]

FordTechMakuloco Thank you so much for your time! New sub here☺

[@raphatang6050]

FordTechMakuloco in

[@alvarosilva957]

FordTechMakuloco i got a 2010 ford fusion. 2.5 se my fan turns on on highway speeds. Passing 70 on a 20 min drive. But the. Temp needle stay in place would this be the issue. No code at all

[@GodWasAnAlien]

At least they finally designed a thermostat that generally fails open rather than closed

[@arthuroalcorte123]

Ain't that the truth!

[@rolandohiebert2144]

Mine is sticking closed on my 2.0 focus so the engine literally boils the water without the temp gauge going up

[@jesusramos5204]

What causes the water to back flow through the expansion tank.

[@jesusramos5204]

2.0 engine 2014 focus

[@MarshalBeard]

This is by far the easiest guide for dealing with that sucker of a thermostat. Dropping the fans is a simple and easiest way to get enough room. I've seen others remove the drive belt, engine mount, power steering pump and reservoir, or removed nothing and struggled forever. This takes no time at all and makes it an easy job if you have small hands like me. As for the bleeding technique, that's a little too "official" for me. I just leave my radiator reservoir cap off and let it get to about 90c so it doesn't boil but also circulates that air out of there. Maybe if your water pump is really weak you'd have some issues pushing the air out, but I've Never had any issues doing this with my 06 focus and my previous 2 cars (99 corolla and 04 audi a4).

[@DeRochaJ]

I just tackled this job on my '08 Focus 2.0 Duratec. Unfortunately I live in New England and one of the thermostat bolts was severely rusted and wouldn't come out (even with a bolt extractor socket). I ended up having to remove the intake manifold so I could weld a nut onto the stripped Bolt to remove it. I give kudos to anyone able to do this job. There is very limited space to work especially if you have large hands like me..

[@Randomgearhead]

i paid my buddy $50 bucks to do this for me. he said the same thing, just leave the hose on it swap it over and re install! you can tell great mechanics think outside the box! you sir are a great one!

[@PineHollowAutoDiagnostics]

Ford sure likes to pack that engine bay tight, don't they Brian? I recently acquired a 1996 Mercury Mystique with the 2.0L Zetec engine. 243k miles and purrs like new. I know the owner replaced all the coolant hoses and thermostat housing before I got it...the hoses burst one by one, and also the water pump seized up at 230k miles. So several overheating episodes but engine seems to be OK. It definitely has a lot of specialty hoses and pipes and clamps that are a PITA to get to. Wiring insulation under the hood is a little crumbly too lol. But the 5-speed drives so nice and looks cool too so I'm keeping it! :)

[@FordTechMakuloco]

The ZETEC was one rusty nightmare!

[@PineHollowAutoDiagnostics]

The engine or the car? The one I got is pretty mint for a Central PA vehicle...and the oil pan seeps around the gasket so there is some undercoating on the belly as well haha

[@radekten]

Some thermostats come with a sensor and the one you recommend is without one. I have Ford Focus 2008 SES, how do I know if I need the thermostat with sensor or without? Thanks

[@bjones8354]

As a former flat rate tech (20+years at Ford & GM, now in fleet maintenance) I really appreciate the sharing of your knowledge. Having this kind of information available is a time and money saver! All your video's are very helpful. Thank you and best of luck with your FordTechMakuloco You Tube Channel.

[@blackrockbrewing5141]

You are the best Tech and best repair videos/info on KZbin, thank-you.

[@matt8863]

1:16 "Be a little smarter than the car" Great words of wisdom right there.

[@dg98adams]

I picked up the AirLift off Amazon, and got the $70 Amazon Visa Card discount.... so it was 1/2 off.... We used it on my 08 Escape this past weekend and it worked great. I have a couple of these Escapes, so I think it's a well worth tool. Thanks for the advice via your Video. You are my 1st stop for For Escape service!

[@J-WHO312]

Thank you so much! The video I saw before this one was a nightmare! Guy took off power steering pump reservoir and a bunch of other stuff. Much easier, weekend project

[@FloridaSunMitochondria]

Serious question: So there is no way to “burp” or remove the air from the coolant system without using one of those special air pressure bleeders?? That kind of limits any DIYer from doing a thermostat change.

[@DoubleD8056]

Very good video. Tons of tips and tricks. No need to remove the power steering pump. Thank you!

[@MrGgarcia7298]

I had this code pop up in cold January. I took the car to the dealer to replace thermostat and flush/replace the coolant. Everything was working fine afterwards. Few months later, (October-chilly weather) the code has come back. Any suggestions?

[@mistersnapon]

I replaced 3 genuine ford thermostats...2 cylinder head temp sensors and still get the code!!!! Whats next?

[@MrGgarcia7298]

@@mistersnapon my scan tool also says it could be a bad Intake Air Temperature sensor. In the case of the panther platform, this sensor is incorporated into the Mass Airflow Sensor. I will have to replace the MAF if this other thermostat doesn't fix the code. Beyond this, I've no clue.

[@mistersnapon]

@@MrGgarcia7298 Replaced that also....took to ford dealer and after $500 later it still does it!!! Also air filter!!! $$$$

[@mistersnapon]

@@MrGgarcia7298 I replaced that too!

[@timothybryant2898]

Just replaced the thermostat in my wife's 2009 Ford Focus earlier this week using this video. I used a vacuum refill tool I got from Harbor Freight once done but didn't clamp off the overflow tank when applying the vacuum yet everything seems to be working alright. So far there's no overheating and the heater is blowing great!

[@SeanBaker]

Hey! I just got a P0128 on my 09 Focus. I've had my car since brand new, and this is the first time it occurred.

[@paulynotshore7006]

Mine overheats... thermostat defective?

[@brodycloud3405]

Might not be opening yes

[@baxrok2.]

The Mazda FSM says that in order to bleed the air out you can hold the RPMs at roughly 3000 for 30 seconds, rest, then repeat. This worked quite well for me. You cool with that Brian? I don't think that many DIYers will have that vacuum bleeder assembly. Thanks!

[@FordTechMakuloco]

Yes I have a video on that procedure, but I only use that to remove the last bit of air from the cooling system Here-kzbin.info/www/bejne/apjOZauYbsaCnac

[@baxrok2.]

Excellent. Thanks!

[@ReclusiveMountainMan]

I recently changed coolant on my 2010 Fusion. Luckily I was monitoring the temp after refilling. The temp gauge went into the red range. I shut the engine down immediately. Everything was okay, but those pesky air pockets are dangerous if you aren't observing things. I'll invest $100 in a vacuum bleeder system. I bought the brake vacuum bleeder you recommended and love it!

[@gavinalyea6673]

Excellent video. Articulated the reassembly perfectly. I appreciate all the good work! keep it up!

[@Marcus-zg8zz]

Any idea if this is the process for a 2011 ford fusion SEL fwd 2.5L?

[@survival4400]

Hi, so I have a 2010mercury mariner 2.5 liter with a heater problem, I had it fixed a few months ago and now it doesn’t work again. I think you're videos will work for my mercury pretty much since it's just a ford with a different name right. Thanks again

[@SwapPartLLC]

I don't have an air compressor. Is there a way to do this with a vacuum pump?

[@NilsJakobson]

That vacuum procedure is completely useless. Just put the coolant in, let the engine run with the cap off, put the heater on max heat and revv the engine abit now and then until you feel that it starts blowing warm. Then shut it off top off the coolant to the level and youre good.

[@MandusahRamirez]

Thank You‼️This Channel is a God Send!

[@newstart49]

I was so sir-prized you didn't replace the hoses while it was out. A few bucks now saves a lot of work later. Also, a very light swipe of silicon grease on the surface of the housing connector or inside of the hose makes a nice seal and keeps it softer and easier to remove later.

[@johnrechner5751]

Got the po125 code. 5.4 engine Ford F-150 where is thermostat

[@alexsmith5884]

John Rechner the 5.4 engine is easy.. it’s literally attached to the upper radiator hose on the engine. 3 bolts take it out replace it ( get a ford one they are like $14 ) and put the little tab toward the radiator and replace the gasket and put it back together and fill it up with coolant turn the heat on full blast and park it with front end higher then the back of the truck ( on a hill ) with the cap removed and it’ll purge the air out easier. They are bad about bleeding the air out and that’s the easiest way

[@jamesmcintire3800]

Thanks for posting this. I’ll need it later for my wife’s Fusion. But what ignorant sob engineer came up with that design? Lol

[@larryh.4629]

Wasnt sure I was going to learn much from you 1st few moments had no idea where you were on that engine BUT I NEVER used a magnetic tool to thread a bolt in that my fat hands cant reach thank you

[@workwillfreeyou]

I have a 2012 focus w/2.0 and its consuming coolant. The car only has 70,000 miles on it. No coolant mixing with engine oil. Is this common?

[@theoldwizard998]

That 2.0L is the first Ford engine that I have seen in a VERY LONG TIME that has a coolant fill neck attached directly to the radiator and a true overflow tank. Every other Ford I have encountered (admittedly not that many) has a pressurized remote coolant tank (you called it a de-gas bottle on the second car). I have never had to use a vacuum fill tool on an engine with a pressurized remote coolant tank. Fill it up, run the engine up to operating temp, top off the coolant and your done. Best practice is to check the level after a full drive cool down cycle.

[@christianeidsmoe4772]

If the car has 110,000 miles, wouldn't it be good to replace the hoses?

[@kmibuilding906]

Brian you make it look easy, thanks. P.S. The F one sissy is still running!

[@ThePlthompson]

Amazing video on this replacement, thank you good sir!

[@louiswilson6950]

Checking Thermostat without taking the thermostat out was, one hose cool & then hot when open or look in radiator & when open, coolant moves across because Water Pump

[@jerryebner7582]

wouldn't you just get a new hose since you got it off anyways? extra expenses for sure but new for the new part?

[@jessev2197]

I always use a new hose b/c there is no more rubber compression to seal. Just asking for a leak that's cheap to prevent.

[@FordTechMakuloco]

Never a problem here.

[@DeRochaJ]

The rubber hoses today are well made. Back in the day when they were not that stout it was wise to change them.

[@vice7943]

Great video. I only would disagree with resetting the clamps in the same place. As seen in the vid, the clamps will continue to dig deeper into the hose causing damage...mostly at the pinch-point. If you slightly rotate their alignment upon replacement, the clamps have more "meat" to eat into and will hold beautifully. Also a little silicone glue helps prevent any leaks. Who wants to do a job like this twice? Lol. Great video though. Thanks!

[@EricEllenbrook]

I just did this on my 08 and it went pretty well using this method. Had a few hiccups along the way but over all it went exactly as described.

[@FloridaSunMitochondria]

What were your hiccups so others can learn from them?

[@johnrechner5751]

Does this engine have a cylinder head temperature sensor and a engine coolant temperature sensor or r they the same

[@arnoldm889]

How do I remove those 2 connectors, I've tried for about 4 hours now and I'm afraid I will break them if I pull harder

[@isasdance9049]

How do you know if the thermostat is the Problem ?

[@BRWfilms]

I am loosing coolant kind of slowly cant find a leak someone is telling me its thermostat and that because its sticking my coolant is coming out overflow this doesnt really sound right to me.. thoughts?

[@rinr7052]

BRWfilms I was told the same thing! Coolant leak. Need thermostat replacement. I’m looking into it now.

[@TheLambo5]

so i need to replace my thermostat on my ford edge 2.0, i cant just replace the thermostat, put new coolant in there and then start the car ?

[@hawaiianf1504]

Brian - Awesome Video Bruddah. I learn so much from watching and re-watching your videos. Thanks Bruddah!! Btw, where is the video link you mentioned at 18:45? (procedure to push air out of the heater core and engine)

[@leo28a]

Hawaiian F150 same question Where's the link to that vid. Brian

[@FordTechMakuloco]

I had to run out to a few mobile repair jobs right after posting but all the links have been updated at the top of the comments and in the video description as always.

[@alexoropeza815]

Y como podemos saver si en verdad ocupa reemplazarse si se ven igual, no se le ve nada diferente

[@YooTooobJeff]

"Be smarter than your tools, be smarter than your car"... ANDYAKNOWDAT!

[@YooTooobJeff]

Robert S ANDYAKNOWDAT!

[@jessev2197]

I tell the youngsters that all the time.

[@saleen367]

Excellent video and workmanship as always Brian. This video interested me since I have the 2015 2.0 and have complained to Ford service dept about how slow it is to create heat in the dead of winter. Often times on those sub zero days its 15 miles of highway driving before I can feel heat at my feet. Then I jump in my work Sprinter diesel and have abundant heat within 2 miles ... ya can't make it up. I'm sure it just a matter of time before I'm doing this procedure.

[@LA_Commander]

Brian I replaced both the thermostat and the ECT sensor on my 2.3L Focus and cleared the P0128 code but the code still keeps coming back. I used Motorcraft parts. The coolant level is good. What now?

[@Mr2004MCSS]

Did you ever figure out what the problem was with yours? My fiancé's son's 2008 Ford Focus had this code pop up last year and we had a shop replace the thermostat with a Motorcraft replacement. The CEL came back on the other day and it was the PO128 again. I can't imagine the thermostat is bad again so it may be the ECT sensor or the wiring to it. I'm not even sure where the ECT sensor is on this car which is the 2.0.

[@LA_Commander]

@@Mr2004MCSS I had replaced both parts and still get the code popping back up. I even took the car to the dealer for a complete refresh and update of the PCM and that still didn't work. Don't know what else to do now. You can try to replace the ECT sensor, it MIGHT fix the problem. It actually doesn't have an engine coolant temperature sensor like many cars, it has a cylinder head temperature sensor (CHTS). FordTechMakuloco has a video just on this subject. It is located on top of the motor between the 2nd and 3rd coil packs. You need a 19mm deep socket to remove and replace the sensor. You will also need a new pigtail to splice into the wiring. Please watch FordTechMakuloco's video on this very thing.

[@Mr2004MCSS]

@@LA_Commander Thanks for the additional information. I remember that sensor from when I replaced the valve cover gasket on it. Next time he is here I will take a look at the connector and wiring to the sensor and see if I see anything obvious.

[@richardburger3606]

Ok i changed the Thermastat and bleed the line its not over heating but my engine lite is still on . how do i get it to go off

[@FordTechMakuloco]

You must disconnect the battery it is not self clearing.

[@DeRochaJ]

The CEL may take several drive cycles/days to clear on it's own. For immediate results you can use a OB2 reader to read and clear the codes or disconnect the battery for a few minutes.

[@Tracks777]

Nice! Keep it up!

[@stickmarsh1]

This guy is the best.

[@pslay9324]

this was a BOMB video it was well put together -thanks for posting saved me $500.00.on my 08 Ford Focus showing code P0125!!!!!! GREAT EXPLANATION....

[@pslay9324]

OMG !! I found my post well my sister has a 2009 and 4 years later her car thermostat needed to be replaced.

[@pablovaldes1992]

I had the code on my 2009 2.3 Ford Fusion. The thermostat was definitely the culprit. I am not getting an overheat condition and I am getting heat in the cabin;however there is a slight slushing sound at the beginning upon starting the car. That is an indication of air in the system correct? Well I attempted the vacuum method-pulled about -26. Filling it up was easy but once I started it no heat in the cabin and driving it around it started to overheat. I purged it through the service purge valve and it seemed like some air made it’s way out, but I am back to hearing the slushing sound when first starting the vehicle but everything works: heat in the cabin and no overheating. I am curious what the long term effect is if left the way it is now? I will attempt the vacuum tomorrow once again and hopefully it gets rid of the slushing sound, almost sounds like ocean waves 🌊

[@AltruisticWarrior]

2011 Focus. Thing never reaches operating temp unless I let it idle in park for at least 30 min. Going 80mph on the highway in 60 degree weather though? Thing doesn't even get up to 1/4. No CEL. Just sulfur smell from the CAT burning excess fuel. Considering my wife never says anything and I only check the car periodically, it's been rather reliable at 175k. I recently did the gasket on the top of the engine in an attempt to change the overhead temp sensor... oil all over the plugs and it still kept chugging. At least the wife was good about oil changes as the engine looks pristine inside, no sludge and the lobes look great. The 2.0 really is a strong and reliable engine minus a couple dumb quirks. Mazda really made a solid engine. I can see why Ford has continued to use it and refine it for decades now.

[@delavalmilker]

I just did this on my 2007 Ford Focus. Some notes: Would recommend a magnetic-type socket for removing and replacing the thermostat bolts. A long jawed and angled needle nose pliers works good for getting the clamps off. The 2007 2.0 Focus doesn't have the hex drain cock and nipple shown here. It only has a slotted plastic plug you loosen to drain the radiator. When removing the shield behind the front bumper and under the radiator, you may want to already have the plastic push pins available. Because it's often impossible to remove them without breakage. Cooling fan electrical connectors on this car are on the top left side (two plugs). Also on this car the cooling fan assembly sits in tabs on the sides and doesn't use bolts. Will need a screwdriver to slightly open the locking tabs on the top. Lift up slightly and then lower. Disconnect the pressure switch connector from the power steering pump, that interferes with access to the thermostat bolts. On my 2007 Focus, the clamp on the short bypass hose that is removed on this video, on my car it didn't have any "ears" to grasp. So I had to unbolt the thermostat (again--a magnetic socket makes this easier), pull the thermostat away from the engine, and then take off the clamp that's closest to the thermostat. On my 2007 Ford Focus, didn't need to use any special procedures to refill the system. The Ford Service Manual just says to fill the recovery reservoir to 1 inch over the "full" mark, and then run the engine until the thermostat opens. And yes---it's a real bear to replace!

[@FredFischer-nx2oj]

I have a ranger with the 2.3L. Same thermostat. Just popped the p0128 code. Will be changing it soon.

[@4-LOW]

Do a video on how to disable the Battery Management System on F150 trucks! It's driving people insane!

[@teddyblankenship782]

does ANYONE, at all, please speak if u do, can someone tell me if there is a video, or even just a instructional paper on how to do this with a Ford Fusion Hybrid? I cant find ANY information on how to replace the coolant thermostat in my 2012 Ford Fusion Hybrid. They all deal with the SE or SEL. Which doesnt help me since the engines are totally different from the Hybrid. So if anyone can please help me find something, id be so very appreciative. Thanks.

[@jrfrailey]

I know this is an old video but had some questions.i have a 2011 fusion with the 2.5. Manual says specialty green anti freeze. Ford said it's been replaced with yellow. I don't think I should mix these. Also I bought the vaccum fill tool. My car doesn't have a radiator cap. Can this tool be used on the degass tank or can this tool not be used on this car?

[@FloridaSunMitochondria]

I’m told it’s better to remove the steel bolts from the thermostat housing when the car is warm but never cold or you risk having the bolts snap on you leaving some in the aluminum because of that steel-alum type of corrosion. Anyone know if this is true?? I know for examples spark plugs you want the engine cold but for the three bolts several have told me best to break them free with car still somewhat warm! Any insight would be appreciated. Thanks so much attempting this on Monday 🙏🏻

[@FordTechMakuloco]

Never an issue.

[@FloridaSunMitochondria]

@@FordTechMakulocothank you so much

[@RetrieverTrainingAlone]

My 2008 Escape with 3.0 L engine had thermostat that sticked closed, not open.

[@qualityrenov]

@FordTechMakloco could you please do a video on pinging/knock on these engines? i have an 06 focus that the engine knock in the summer months. especially audiable when you're stopped at a street going uphill and want to initate speed from a stand still!! i changed the knock sensor, spark lugs, used premium gas, to no avail!

[@mrau92me]

If you're talking about a kind of a "grunt" sound when you first accelerate, I think it might be related to some butterfly valves in the intake manifold that are supposed to cause intake air turbulence at lower RPMs. The flaps are plastic and the rod that actuates them is metal. I think the metal rounds out the plastic a bit and then it begins to rattle, especially when accelerating from a stand still.

[@juz882010]

any idea why my focus 2.0 '13 is pissing out coolant from the middle of the car? there appears to be hoses that run underneath possibly damaged Im not sure. Why is coolant running back there?

[@aharami]

My 2013 Fusion Titanium (93k miles) is leaking coolant. Seems like from the thermostat housing area. I'm guessing the gasket wore out. Can I just replace the gasket (part # 3M4Z8255A) or should I replace the whole thermostat housing with a new thermostat? Thank you

[@wpmeruski5599]

Hello everyone... I have a problem, my camshafthas been damaged. Lifter broke up and destroyed my cam. My car is Ford Explorer EB 4.6 v8 from 2007, I live in Poland and I have problems to buy such a camshaftfor my car.I can buy a camshaftfor Mustang GT. Will there be a matching camshaft for my Explorer? I was looking at RockAuto and probably the same. Please help me with this. I have some more questions ... 1) What oil poured into thisengine? 5w20 or maybe 5w30, Motorcraft or other company (Mobil etc) 2) Does Enginetech make good parts? Maybe DNJ, Melling, Sealed Power, etc. 3) I want to replace the camshaft, I bought the whole kit Cloyes of RockAuto ..... is that a good choice? Sorry for my English

[@FloridaSunMitochondria]

Is it true the bypass hose part was made of brittle accordian style tubing and was later replaced with a part metal and part rubber radiator style hose? They want $152 for the bypass line which includes the metal piece, rubber hose and clamps!! Praying if this is true mine has already been replaced.

[@FordTechMakuloco]

yes

[@FloridaSunMitochondria]

⁠@@FordTechMakulocoyou are so awesome thank you so much

[@FloridaSunMitochondria]

Wish you would show yourself removing the actual thermostat housing bolts. Still an excellent video.

[@FordTechMakuloco]

Impossible to film in there while working.

[@FloridaSunMitochondria]

@@FordTechMakuloco I can imagine! Just a wish - your videos are the best !!

[@pl747]

How come the Ranger 2.3 comes out with the blue coolant? I have a 2007 and 2009 and both have blue. Wouldn't I want to go back with blue?

[@jamesmahle1259]

As always, excellent work on the video; the detail work is beyond reproach. Replaced thermostat assembly with new hoses and clamps today on a 2008 Focus. Did not remove the fan. Time about 4.5 hours total; tough job for me. If I do another one I believe that the time saved by removing the steering pump would be better than my effort today. But as always and again, thanks truly for your presentations.

[@55chevytruck]

Got a 07 focus 2,0 duramax. Getting a 1289 code. Any advice would be welcome. I watch all your vids before doing a repair, and also have a 01 f150 with 4.6 . Ford does make you LOCO!

[@demonmathis5981]

Where is the coolant temperature sensor located? 2006 mercury milan 2.3! At idle my temperature gauge keeps shooting to cold. Only thing I can think of is the sensor. Just change thermostat about a month ago

[@grampymeyer6603]

My '02 Explorer 4.6l 2V had the same symptom, didn't heat up fully. But I'll admit teh Thermostat replacement was several times easier. The O-rings do a great job of sealing it.

[@gregbishop8685]

@FordTechMakuloco Love you videos, they help me alot!!! was curoius what kind of camera do you use when filming?

[@ReclusiveMountainMan]

Was that a scotty kilmer grunt at 7:50 ?

[@FordTechMakuloco]

+ReclusiveMountainMan Maybe!

[@jamess4351]

ReclusiveMountainMan Rev up yer engines! !! 😂 uuh

[@DeRochaJ]

LOL -> @@jamess4351

[@bellawright4265]

Changed the thermostat on my 2000 f150 5.4 260 thousand miles a month ago..it was stuck open and i replaced it with a new one from ford...Not After market Junk...took me about 30 minutes and a cup of coffee and all is good.Spend the extra few dollars and get the original and not the local parts store...you'll be better off in the long run.

[@richardfoster9499]

The early ford focus 2000 to 2004, the thermostat housings were prone to leaking. The lip that holds the rubber O ring in place will corrode away causing the O ring to collapse in on itself causing the leak. The permanent fix is to install a thermostat housing from a Ford contour, same diameter but different design.

[@keithfrank1303]

Best an most complete vid on this I have seen … will be doing one in several days myself … repair shop wants $400.00 . Thanks loads !!!!

[@elgmac73]

Any idea what a hissing sound coming from the driver side of the engine is, plus I see bubbles. I thought it was the thermostat but I see that the thermostat is on the opposite side .It does this specially on Summer. I have a 2010 Ford Focus BTW-Thanks

[@keithusaf1]

FTM Thanks for another beautifully shot video!

[@ALe-qu2bo]

Good afternoon, this question is already made and I am not told very well please tell me where I located the antifreeze or coolant sensor of the ranger 2.3 2010 Argentina is that I do not know where it is told me back but I do not know if to remove the body of acceleration to achieve it you could show it in a video, I am from Mexico but unfortunately nobody wants to tell me It is not in the radiator or where is the thermostat please can you tell me to explain in a video where it is located, I would greatly appreciate it

[@terranosrespuet]

I have a 2005 Ford Focus ST with the 2.3L engine, and I will be undertaking the same repair/replacement this weekend. I am having trouble finding the bleeder nipple on my engine. Do you have a diagram or picture of where it is? I looked where you showed in the video with no luck.

[@jimsmith8817]

Great VIDEO I have a 2.3l in a 2011 Ranger that seems to be running cool (175deg.). What would be the proper operating temperature for this engine. I've found a RT1193 and a RT1194 thermostat but the don't give any temperature settings. Thanks

[@824rmrock]

Excellent explanatory video so much I thought I knew. Thank you very much for the help

[@LegalNYer]

My thermostat failed shut on my '07 Focus SE at the 11 year point. When they were repairing it they broke the power steering reservoir and thus I had to have that replaced. I wish I had seen this video before it happened.

[@jasonashley9853]

I have a 2016 and when you start the car up and use the heat it won't go past a quarter on the temp gauge. Heat keeps the engine cool. Suspecting thermostat. Replacing it today.

[@hardwarereviews9170]

Please tell me something, there is an o-ring inside the thermostat, how to place it in its place? not talking about the around seal, but about the circle ring

[@dallasharris8753]

I have a 2014 Ford Escape that keeps overheating and showing stop engine yo allow cool down when throwing overheat warning on the dash . I have replaced the coolant reservoir as suggested and it’s still overheating after driving for a few days and low coolant in the overflow tank . Any suggestions ? Please help !! Where do I go from here to resolve this problem ? Please help ! Thank you 🤔🤔🤔

[@RAY-THE-WAY]

Dallas Harris blown head gasket maybe?

[@dallasharris8753]

RAY-the-WAY Actually I just fixed it. I found out the new coolant reservoir was defective too. I Changed it, added straight antifreeze , cleated the codes and so far it’s been working good . I called Ford to check for any tech bulletins it recalls n they said no . So I had it pressure tested n they found the coolant tank was the cause of it . Ty for the reply , hope everyone gets theirs fixed . It’s crazy they building these cars so cheap n charging a an arm and a leg for them and they don’t last !

[@RAY-THE-WAY]

Dallas Harris I know bro. I’m suspecting my thermostat is faulty and left open because it’s taking like 15 minutes to heat up to a quarter.

[@dallasharris8753]

RAY-the-WAY from what I’ve been reading about these, there’s a control valve on the right side by the return line that gets stuck , either in the open or closed position that could be the culprit as well . Have you scanned it with an OBD tool yet, if so what code(s) are you getting ? The thing that I found out is , make sure you add Straight Antifreeze per this engine type, water alone will cause it to overheat, I found out the hard way n it cost me $200.00 from a reliable mechanic that solved mine brother . Also one more thing, the 3 lines that feed the coolant tank, make sure they are intact , as the plastic insert on the medium line has a tendency to leak from the quick connection to the tank too. I fixed that by adding a brass insert reducer, a short piece o 5/8 heater hose n 3 new hose clamps !

[@VDPEFi]

There's a revised part available for this in Europe, brings the main house connection out about an inch and a half so it's easier to manipulate the clamps and hoses on the car, still a total pain though! Also, when fitted in a Mondeo, it self bleeds very well, does anyone know what the difference is?

[@benjamin4394]

Question: can you bleed the air by using bleeder valve? I don't have the vacuum set up. I used bleeder valve until all the air was gone and only fluid was coming out in a steady stream.

[@AJEMT87]

Any chance a P0128 code on a 08' 2.3l Escape is just a coolant temp sensor replacement?

[@FordTechMakuloco]

no

[@AJEMT87]

FordTechMakuloco Thanks for the response! Just ordered a new thermostat and housing. Will the check engine light go off on its own after replacing or does it need to be cleared?

[@sheerwillsurvival2064]

Bought the airlift have to do daughters focus but no radiator fill tube do you put vacuum on overfill bottle?

[@oldfart1881]

What about if you want to put new hoses on it ? I think after going through all of that i would rather have new ones verses re using old ones. Just my opinion, but it seem like alot of work to get all the air out of system so you wont have problems with it over heating. Is this just a ford thing, or what? From what i can tell watching videos on u tube is that fords have alot more issues involving service than other models in general.

[@DFWSpeed]

@fordtechmakuloco I have a 07 Focus 2.0l in the shop. We are on thermostat #2 and the code still pops up after a week of driving. We only use OEM Motorcraft tstats (RT1193). Any advice?

[@johnrechner5751]

Where is the engine coolant temperature sensor 2003 Ford F-150 5.4 engine

[@FordTechMakuloco]

Engine valley front drivers side but this is only a CHT sensor.

[@johnrechner5751]

CHT what does that mean (cylinder head temperature )

[@mrau92me]

Just did this on my daughter's '09 Fusion 2.3L. Things to note about it: Before pulling the cooling fan up & out, there is a hose support at the bottom that wraps almost all-around the radiator hose... you'll need to push the hose out of it. Second, to help guide your extension and 8mm socket, use a light for the top left bolt which can be seen thru the IM runners. The top-right bolt, look from the PS pump side, but to see the bottom-right, I used a mirror. For the small bypass hose on our car, there was no extension hose near the t-stat housing like on the car in this video, so I also just left it clamped to the housing like the main radiator hose. Once the t-stat housing is unbolted, I had to disconnect the connector at the compressor clutch, which allowed me to manipulate the housing and attached hoses between the a/c lines. At first, you may think it's not possible to get it through there, but if you tilt it a certain way, it actually comes thru easily. Doing so, makes it easy to swap out the t-stat/housing assembly right there at the car. Unlike the car in this video, on my Fusion there were other hoses branching from the main hose, so to me it was more trouble to try to get it to the bench. I easily put the clamps back on hoses where they were. Also, just before refilling the coolant, don't be afraid to loosen the plastic bleed valve cap several turns or even to take it off for that matter. My Haynes manual incorrectly said to only loosen it 1/4 turn but that wasn't nearly enough to allow any air to escape. However, running the engine afterward for 10 minutes at 2500 rpm did seem to do the job. I only had to top the reservoir off a little bit after I drove it about 3 miles afterward.

[@AustinWilhite]

I fought with getting the fan out of my 2008 Mercury Milan 2.3L for 45 minute before giving up on it. I removed the bottom hose support from the hose, but still couldn't wrestle it out of there. I'm not sure how you managed to do it. I opted instead to remove the power steering pump for access to the thermostat bolts.

[@78djohnson]

would it be smart as well to replace the hoses while in there?

[@FordTechMakuloco]

If you wanted sure but this customer was on a budget and already had a large bill from other repairs on the vehicle. Also to this day I have never seen a factory hose burst and I have seen allot of vehicle with some high mileage on them.

[@qualityrenov]

I don't know how he did it! i have an 06 focus(2nd generation focus), same engine as the one in the video(3rd generation focus)2.0 duratech, and I had to remove the power steering pump. fordtechmakloco did a wonderful job. before you condemn the thermostat, check your cylinder head temperature sensor. mine i had to replace before.

[@williammason7092]

The filling system you have I might have to get one mo mess trying to bleed it with the funnel I have

[@larsonflynn7846]

Dumb question, but how do I know if the thermostat is the issue or the temperature gauge in the dash?

[@rays.2480]

Can you help or suggest things to check ? only 42K miles on this van.. I have a 2013 transit connect. the temp gauge is in the middle, no codes, but the heater on this van seems weak.. in the winter, the engine is up to temp in about 15 min or so,.but the heat is luke warm, the heat isn't kicking til about 25min or so into a drive. But once its good n warm it stays this way. if the thermostat was stuck open would my temp gauge still be in the middle ?? I'd think it would show lower than the middle..

[@rays.2480]

hey guy.. I had asked you about my issue quite a while ago, but you never answered me.. Can you advise or are you not allowed to ?

[@frogking5583]

i have a 1.6 do you know if the alternator needs to be removed to access the thermostat

[@mgonzalez481]

My friend I need you help already change the thermostat and still leaking from the edge of the thermostat any advice please