2012-2018 Ford Focus Thermostat Replacement How-To 

Thank you ! I followed your video step by step and successfully changed thermostat in my daughters 2012 Focus. Much appreciated. Keep up the GREAT work.

Thanks. To be a successful mechanic these days you have to have small hands. I have used a very thin grease coating on hose connections or some WD40 to help them slip and seal. On those nuts I tighten until they get decidedly bottomed out and then another twist each or no more than an 8th additional turn - plastic parts don't lend a lot of confidence either side. The threads are super fine so they don't back out. Use good judgement but that O ring gasket is good.

That was a great video. You spoke very clear and I hope you make more videos.

Nice job. I have a 2012 5 speed, been a great car. I currently have a heater hose leaking at the firewall, thought it might have been the heater core, but hopefully got lucky. Ordered the hose the other day plus the tool to remove it. I'm also lucky, I work on jets, so mechanically inclined, plus I have skinny arms and long fingers!🤣 Fine work my friend!👍

Good morning, how do I know if I should change the temperature sensor? What I see is that when I start my vehicle in the morning the needle goes up somewhat quickly to the middle (between 30 seconds and a minute letting idle) but it never goes beyond that no matter if I drive a lot or leave the car running for several hours on a hot day... is that a symptom of a faulty temperature sensor? or that could be a symptom of the Thermostat that is failing?

I did this and my car wouldn't start after. So, just to let people know, there is a connection right above the hoses, going into the housing. That connection leads to the fuel pump relay. If your car wont start after, that might be it. When I pushed it in, it only moved about an 1/8th of an inch. Looking at it, I thought it was OK, until I pushed it in. Just thought I would put this out there, just in case.

Great video 😊

Great video I was nervous about doing this repair plus almost got the thermostat by itself

Basically if your gonna do the water pump you might as well remove the belt /tensioner and go to work on the water pump as well. I replace in pairs

Before I change the thermostat on my 2012 Ford Focus is it a must to drain the coolant first? My coolant seems to be fine, this is my first time changing the thermostat on my own!

Nice job! Thanks for the good explanation.

From another site, what does it mean to backfill the block to prevent an air pocket? Is that necessary?

Great vid! Thanks a lot!

I noticed that you installed the new thermostat without gasket and sealant ? Please reply thank you

Muy buen video!!! Exelente!!! Saludos!!!

just to note that distilled water does boil.

Work on it and include the water pump wow the thermostat was way more difficult than the water pump

Thanks for the help.

Thank you for the video.

It’s. A 1.6 4 cylinder,is that called eco boost USA…?

did you have to end up taking the headlight off?

Is the thermostat a wear item or 🤷

The cost and how to change the thermostat on a 2008 Ford focus

Anyone done this on the 1.6 petrol ? Is it any easier or harder

2012 you will have to loosen and hold the alternator out of the way to reach the bottom bolt. 13mm leave it hanging on top bolt and just move the bottom out of way.

Tengo un carro igual, y me marca fallo en el Sensor MAP, pero no lo encuentro sabrás donde esta ubicado.

Needs 4 bolts equal distribution will leak again bad design

Great vid

Wich engine is it?