Replacing the thermostat housing on a mk6 fiesta 

Just done this with help from this video. Longest time for me was getting the hoses off the thermostat housing. You need to get them moving by twisting and pulling up and down. For people who asked about getting the alternator back on: Put the belt on the alternator and put the bottom nut in. Do not fully tighten it. Swing the alternator up and apply right pressure to line up the top bolts. Evenly tighten the two top bolts. When bleeding the system, there is a bleed screw on the top right of the radiator if you were to look at it from insdie the engine. Undo that nut and pure coolant in to the expansion tank until coolant comes out of the bleed screw. Tighten the bleed screw. Put the cap on the expansion tank and run the car at 3000 rpm for 2 minutes. Top up coolant if necessary . Run the car again at 3000rpm for 2minutes. Top up coolant if necessary. Make sure you've got hot air in the cabin and you should be good to go. The whole job took me about 5 hours. Never want to do it again. I was dead after that.

Great video and a life saver for time. Young lads MK6 was dripping, slowly, and i traced it back to those two pipes but unaware of the housing unit failure. This video showed me the problem which i have including the exact same drip and drip route (along the block to the sump). So a great help, thanks.

I'm supposed to be a professional mechanic but I've been stressing all day about this, completely slipped my mind to remove the headlight 😑 good video, cheers

Very good video. The original hose clamps will tighten up as rubber hose sinks over time. This is what the spring design is for. You may have to keep an eye on those replacement clamps and tighten them up in year or so.

Your video helped me replace my moms thermostat that was stuck closed and causing overheating, was a bit challenging as a first timer, tight squeeze to get that housing off but did it! Thanks again!

very good video - really clear and well explained - thanks

Brilliant video! I had a leak from my Mk5 Fiesta which was dripping out from near the gearbox. As water follows its own course, sometimes it's difficult to trace the origin and I didn't have a clue. After finding your video on a search (my leak was dripping underneath in roughly the same place as yours in the other video), I put an endoscope camera under the thermostat housing and voila! Thanks so much as I was expecting a hefty garage bill but that job, I can do myself. Cheers!

This video was so helpful to me. Thanks for making it!

brilliant video mate. I've got a 2005 mk5 fiesta rust bucket but runs fine apart from drinking coolant about as fast as I can drink beer. Engine seems pretty similar to yours, so I'll give it a go.

Great video good explaining saves time

Good simple vid mate at least i know whats got to be done

Done this on my car took me an hour or so, done the exact same job on my mates car took me 10 minutes, I was just pulled the pipes for the thermostat down and disconnected them when they were down in the radiator area, no belts or alternator taken off

Top man just followed your video. Thanks really helped me

Thanks for your video its going to help me a lot

Thanks, great video. I know how to tackle this now.

Thanks again for your help.

Interesting!

thanks for the video mate

This was a great video

Brilliant to have the spare engine for demo 😉

lets say £20 for the housing, £20 for the thermostat (might as well ge t a new one while your there) £20 for the 5ltr of coolant. it's really recommended to change the drive belt as well if you're gonna remove the alternator so that's another £20 that's £80 in total if you did it yourself. if a garage did it they would proberbly charge maybe £30 an hour(can't see them taking more than an hour to do it) that would come to £110 maybe a bit more. the question is , is it worth all the hastle doing it myself or pay a little extra and let the garage do it? the thing about this kind of job is the great satisfaction you get when it's all finished and you;ve done it yourself. decisions, decisions. love these mk6 fiesta vids i'm learning a lot of stuff, keep up the great work mate.

Hi! Thank you for the video. Only a question: so you didn't pull away the alternator belt? It is not necessary? You only took off the alternator and you rested it on there ?

Nice one pal - great video. I tried to do this today, same model as yours. Reassembled and have a pretty bad leak. Going to tackle it again tomorrow. I know you said you used silicon but I would rather avoid that. I am guessing I didn't tighten the housing enough. Did you have trouble getting those nuts tight? Pretty shocking manoeuvring to get into those tight spaces. Anyway, thanks again for the video. very useful.

How would I know if it is the housing or the pump leaking, when I fill the tank it immediately starts to leak, if it were the pump would it leak immediately? Leaking without the engine running. Thanks.

Love the Liverpool Accent

Thanks for this vid. Just did the cam belt water pump put everything back together to find that the bloody housing is now leaking! Now I got to take the alternator back off again ahhh! Anyway, and idea what to torque the bolts too? Im guessing 10nm thanks in advance

Great video, helped me out on my daughters car👍🏻.. I’ve another fiesta 1.2 and I’m changing the engine..to a 1.6.. Was the engine swap difficult? Can I just drop a 1.6 in or will I need Ecu, loom etc Or can they be used from the original one

Hi again. I had a quick reccy this morning before i start doing the job properly. What did you use to get to the 8mm bolts on the thermostat housing? It looks like there is not a lot of room . Did you use a socket? Cheers

Bruv- I've just paid a garage £192 for doing this! Then I come home and find this vid!

Nice clear video....How long did it take to do cheers

When times were fun £150 engines

Got this problem on mine, the leak looks like it's coming from where the housing meets the engine block, do you reckon I could just take the housing off and silicone it? And did you use just normal household silicone sealant? Thanks for the vid

Where is the temperature sensor located 2013 Ford Fiesta S

Where did u buy this part from ??

Hey dude, great video :) if my heat gage stops working does that also mean that my thermostat is faulty? Thanks in advance

Can you put a new O-ring on the housing if it looks like your one did?

How did you replace the auxiliary drive belt tho ?

Hi did you have to remove the power steering belt to refit serpentine belt? I think i have the same housing problem as you and want to replace it myself. Great vid though.

how did u get your aux belt back on? Mine is really hard to get back on. Impossible nearly! I have air con though.

just did this fiddly but did it without removing headlight or alternator

On average how long does this job take... i have a feeling ive been ripped off on this repair job on my car

Cheers for posting this. The mystery is solved, more or less. How much would you expect to pay for repairing this at a garage ?

Would it be possible to do this without removing the alternator? Could it be done from underneath the car?

My alternator belt seems rock solid after doing this. There isn't an actual tensioner. I put the belt round the alternator pulley and I had to pry the alternator up to tighten the two top bolts please help?

Yes mate did this hold up no more leaks?

Thanks! My alternator is held on with one bolt and a stud at the top. Do i have to remove the stud and then refit it? Is yours held on with a stud too? Mine is a 2002 model.

Don’t ever sell your car mate or I’ll be screwed 😂or wait for me to sell mine first😉👍🏻

And I paid 80€😢 for change

Bro i need help

i dont understand what your sayng

Bakerlite.... How old are you? 😂😂. Plastic. Gets hot then cold and after a million uses it cracks.