Replacing the thermostat housing on a mk6 fiesta

[@hellonpluto]

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.

[@Castiel32]

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.

[@harryharwood3449]

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

[@deltaunit7]

Your welcome :)

[@gerardogle1732]

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!

[@deltaunit7]

Gerard Ogle no problem :)

[@evilgrin123]

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.

[@nigelparsons4387]

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!

[@deltaunit7]

I'm happy my video could help you :)

[@stevenfairlie3407]

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.

[@grahamstyles9129]

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

[@Lewis794]

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

[@deltaunit7]

Lewis Worbey that's good that you found a short cut and saved yourself abit of time, sometimes the pipes coming off the housing are very hard to removed and need abit more access to try them off. However what iv shown in the video is what's listed in the haynes manual.

[@grantdevon]

Was it difficult to get access to the bolts? From what angle did you approach it?

[@peterwarren7117]

very good video - really clear and well explained - thanks

[@redpig1120]

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

[@deltaunit7]

Hello, thanks for the feedback. Iv only swapped like for like 1.2 for 1.2, so can't comment on the ECU and loom going to a 1.6, I would image they are different tho as the ECU will need programming to fuel according to the engine size and injectors etc

[@Lar308]

What would be causing my coolant to leak from the opposite side of the engine. My car is a 2005 1.2 petrol van?

[@alexe5461]

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.

[@deltaunit7]

Hey thank you for watching my vids, love the feedback. I think a garage would charge more than £110 tho, main stealers would be easily double because they have to use OEM parts which hold a higher price. Where as a decent independent garage using quality aftermarket parts like bosch would be £170 ish. The video shows the job is pretty straight forward, and is definitely something the home mechanic could do with a bag of spanners and some time.

[@alexe5461]

@@deltaunit7 yep you're right. garages would only use genuine oem parts so the price would be a lot more than £110 thanks for pointing that out. i used kseal to stop the coolant leak but i'd like to change it as soon as possible. they say kseal is a permanant fix but i don't want the housing to start leaking again.

[@benp4514]

Top man just followed your video. Thanks really helped me

[@nickb7040]

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

[@deltaunit7]

mike hunt hey Mike good work! I presume you mean the torque for the thermostats bolts? I can't remember what it says in the Manuel, but I remember not following it and good wrist tight and that's don't the trick for me. I also used bathroom sealant around the edge of the thermostats to form a better seal and if it even warps in the future this will hopefully allow the seal to move with it an still prevent it leaking

[@adri14f]

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 ?

[@neillaw6249]

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

[@deltaunit7]

Neil Lawson cheers for the feedback, check out my other how to vids for fiestas :)

[@aaronwillie5625]

Great video good explaining saves time

[@cliveandmat]

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.

[@reacey]

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

[@deltaunit7]

As you seen in the video I had a spare engine with a housing on it that was not warped so I used that and the sealant was just a back up really to try prevent it happening again, the sealant was a high temp silicon

[@reacey]

@@deltaunit7 cheers for the reply, got a new housing and stat today and fitted them thanks to your vids, bottom bolt on alternator was a ballache to get loose even with the linkage attachment thing as there were other pipes in the way that arnt on your engine, no leaks and engine temp normal, touch wood, thanks again for the vids, gave me the confidence to have a go and saved me and the missis money, thanks alot!

[@deltaunit7]

@@reacey I'm glad it has helped you out :)

[@monkeystu52]

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.

[@deltaunit7]

Hello Stuart, I used silicon sealant because I know these thermostats housing warp over time and the silicone sealant will move with the part even if it warps it will still seal, didn't really fancy doing the job again if it happen. I had no trouble getting them tight if I remember rightly they are only M6 bolts so you don't have to swing off them. Hope this helps

[@monkeystu52]

@@deltaunit7 perfect. Thanks very much. Appreciate the video and the response

[@jaredakten4939]

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

[@deltaunit7]

With all the tools and parts ready to go, half n hour but no need to rush just take your time and follow step by step.

[@sweetcheeks7052]

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

[@deltaunit7]

If you know your way round this car I'd say 1 to 2 hours, definitely no longer

[@sweetcheeks7052]

Ok thank you nice vid 👍👍👍

[@simonsmith3188]

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

[@deltaunit7]

Simon Smith I used small 1/4 inch drive socket with an extension on it with the 8mm socket on the end, if you can't get at it try looking from underneath or use a knuckle joint on your socket. Hope this helps, Also refer to the start of the video as view the engine out of the car for a clear view where the bolts should be :)

[@shaneaverill5414]

Yes mate did this hold up no more leaks?

[@deltaunit7]

shane averill yes still running strong 10k later

[@simonsmith3188]

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.

[@deltaunit7]

Simon Smith the only belt that needs to be removed is the belt that goes round the altinator, any other belts are fine and don't need touching. When you reconnect the belt back to the altinator the main altinator bolt pull the altinator and the belt back into alignment once tight

[@simonsmith3188]

thanks very much for your prompt reply. Going to get the part needed and stop the leak. Cheers muchly!

[@deltaunit7]

Give me a shout if you get stuck mate

[@TomFelo]

@@simonsmith3188 So, is it possible to do, like deltaunit7 said? I mean with the alternator and belt

[@carlosx8800]

How did you replace the auxiliary drive belt tho ?

[@deltaunit7]

Hello, if you go on my channel Iv got a video on that too.

[@brendan4ever]

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

[@deltaunit7]

I believe so, but I went belt and braces and used silicon sealant aswell, the housing is will know for warping so at least this way it will still work even if it warps

[@Tricky66]

Thanks for your video its going to help me a lot

[@deltaunit7]

Richard Dobson your welcome :)

[@kylekatarn3382]

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

[@deltaunit7]

Carl Sinnott thank You

[@itsleelockwood]

Interesting!

[@deltaunit7]

itsLeeLockwood in a good way?

[@outandabout3335]

Fancy seeing you here haha, loving the off road content 💯

[@arqamsmith1257]

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

[@deltaunit7]

Arqam Smith hello, when you say heat guage do you mean temperature reading on your dash? If so not always, it depends what your reading is doing, it should slowly rise to about mid way or read 90 degrees then stay at that temperature, if it doesn't get to that temp it would suggest your thermostat is stuck open, if it's to hot that would suggest alot more..... loss of water/ maybe head gasket or simply termostate stuck closed. Either way you'll have to remove to thermostat housing to get at it an replace it. This video shows you how to get at it. However I don't fully know what the problem is.

[@ricardopalma8511]

Where is the temperature sensor located 2013 Ford Fiesta S

[@aleddavies770]

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?

[@deltaunit7]

As you tighten the alternator it acts as a tensioner. Although if you are seriously struggling to get the belt on it might be the wrong one.

[@aleddavies770]

deltaunit7 No, I was reusing the old belt but I took so much effort to pry the alternator up to tighten the the two top bolts. I'm kinda worried I'm going to ruin the alternator, AC, and power steering bearings because of the tight belt

[@deltaunit7]

Unfortunately I can only suggest going to a garage and asking them to double check what you have done.

[@simonsmith3188]

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

[@deltaunit7]

Simon Smith mine is the non aircon model however i would have thought it would go back on the same way, the belts used for these are stretch fit and thus you need to put it around all the pullies first including the altinator pullies before fixing the altinator in place, the altinator has 3 bolts 2 at the top and 1 at the botton, do the one at the bottom first while the belt is on it, then as you feet the top to bolts in they should locate the tread with a bit of a push to them put tension back on the belt. Hope this helps

[@alexe5461]

@@deltaunit7 the belt for the non air con mk6 is longer than the mk6 with air con. 1042mm (non air con) 1019mm (with air con). maybe why some find it more difficult to reattach the belt to the alternator

[@simonsmith3188]

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.

[@deltaunit7]

Simon Smith refer to the video at 2.16 in, You can see the 2 long studs at the top and the smaller one at the bottom

[@deltaunit7]

Simon Smith and yes you need to remove them long bolts full to take the altinator off

[@paultatumtates4037]

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

[@deltaunit7]

Well done, it is possible if you have elbows that bend both ways and have foot long fingers hahaha, otherwise the couple extra steps removing the headlight and alternator just aid the process

[@warriorsofwarmth]

How? Did u manage it from underneath?

[@sparkeli4513]

Thanks for this comment Paul, I need to do this fix and I am worried about not being able to get the alternator back on with the belt. You have put my mind at ease. 👍

[@logan-mc2827]

Where did u buy this part from ??

[@simonsmith3188]

Thanks again for your help.

[@claireb8542]

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

[@deltaunit7]

Im not 100% sure, I think it would be possible but it's much easier removing it for access to them bolts

[@Mr_Lupine]

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

[@deltaunit7]

Probably 120 for 2 hours worth of labour and then the part cost, quite upsetting when it's rather easy to do

[@Ben-jq5oo]

Brilliant to have the spare engine for demo 😉

[@deltaunit7]

Unfortunately for me as I had to do the swap haha, but yeah good for the video

[@atanas45]

This was a great video

[@deltaunit7]

Thank you :)

[@dr.chicago2280]

thanks for the video mate

[@belbbains6997]

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

[@deltaunit7]

Ah no way man! Hopefully you never need this video again then

[@carllockpick6179]

I got a quote from a garage, silly price, they won't to replace the housing. Well my car is a 55 reg, its been through 15 years of British summers / winters, so I took it off and just replaced the o ring, think it was about 5 - 6 pound at Qu___co. ( as well as changing thermostat ) all been good since.

[@zzhughesd]

When times were fun £150 engines

[@revolutions88]

Love the Liverpool Accent

[@deltaunit7]

Revolutions88 thanks mate haha

[@andrewhewitson6682]

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

[@deltaunit7]

Too late, Iv not owned a fiesta for # years now haha

[@andrewhewitson6682]

@@deltaunit7 what car do I buy next?😂👍🏻

[@deltaunit7]

@@andrewhewitson6682 mk2.5 ford focus zetec s 1.8 petrol haha

[@amitdogra4925]

Bro i need help

[@amitdogra4925]

What type of problem you are facing before you changed it

[@deltaunit7]

@@amitdogra4925 hello, I was experiencing loss of coolant, and I could see the drip of pink coolant under the car. All the components the coolant touched had dried a crusty pink colour too.

[@amitdogra4925]

Thanks

[@deltaunit7]

@@amitdogra4925 hello, I was experiencing loss of coolant, and I could see the drip of pink coolant under the car. All the components the coolant touched had dried a crusty pink colour too. I think I experienced overheating too.

[@fitlifestyle1389]

And I paid 80€😢 for change

[@enzoyusi1900]

i dont understand what your sayng

[@harwoods11]

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