Corsa D Thermostat change - A step by step D.I.Y guide

[@dazzahaywood3298]

Great video gonna do exactly this tomorrow got all the bits never done owt like it but local garage want 260 for this job plus water sensor new one. So gonna do it my self

[@herrlip72]

Place a couple of old towels underneath it too, really helps soak it up and less cleaning up as well as the drip tray you mentioned and also Torque for Thermostat housing to cylinder head 24 Nm

[@nathanhuitson1418]

Good work mate, shame it didn’t sort the issue, thanks for the video though, my friends car is leaking coolant not loads, but having to top it up once a week, noticed it was coming from the thermostat housing, was going to just replace the gasket, but going to replace the whole thing, just in case the plastic has warped

[@monkmodemalik8225]

Thanks, just did this on my corsa e it’s basically the same

[@lambsmotorworld2599]

Glad the video helped in some way. Quite an easy job isn’t it? Saves paying a mechanic to do it 👍

[@terencecottington4273]

Just love it when people take the time to do these videos as it helps so many. 👍👍👍 Just one quick question...Did you reset the ECU error and rescan just to make sure the error code in the ECU did not return ?

[@lambsmotorworld2599]

There was no error code recorded in this instance. The work I did was speculative to see if it would cure a fault with the heating as everything was pointing to it being a thermostat fault. In the end it was the water pump. 👍

[@terencecottington4273]

@@lambsmotorworld2599 Sadly these things happen but hopefully now you are good to go. Thanks for getting back in touch. Hugely appreciated.

[@chipsmcgee]

Great video !! I am thinking of changing my thermostat because the light is flashing, the fan won’t stop and the car won’t start, is this what you had and why you changed it? Thanks in advance.

[@lambsmotorworld2599]

I replaced the thermostat in mine as it was middle of winter and I had no heater 🥶 I’m not a trained mechanic but don’t mind having a go. Everything I read suggested the thermostat but there wasn’t a video to show how it was done for a Corsa D, so I did one myself. In the end it turned out to be a failed water pump (I got a garage to do that 😄). As for why yours isn’t starting it could be related to the thermostat, but I couldn’t say for sure. Good luck in getting it sorted. Thanks for comment on video 👍

[@jfredsmale]

Hi there @chipsmcgee, was this your thermostat in the end? I have the same issue.

[@urbancyclist6134]

I fitted 2 new after market ones and they didn’t work , put 2nd hand genuine on and it worked as before it was boiling up

[@zzhughesd]

Hydraulically controlled ? By the hot water open mean, I've a problem with my ThermoStat and I've replaced 2 new boxed ones, same over heat, same cold pipe out of it, I'm puzzled

[@SnGrg]

Did you apply any sealant such as silicone or did you just screwed it back to its place.

[@lambsmotorworld2599]

I replaced it exactly as I found the original. There was no sealant on the original so I didn’t apply any to the replacement. So far so good. No leaks 👍

[@SnGrg]

@@lambsmotorworld2599 Thank you for your reply.

[@jordanmuldoon6830]

Hi pal was the service light on the dashboard? The car with spanner threw it haha am having the same problem I think

[@lambsmotorworld2599]

@@jordanmuldoon6830 - No warning lights at all. It drove as you’d expect, but cabin didn’t get warm. Everything led to it being the thermostat, hence the reason for changing it. Quite an easy job anyone could do.

[@jordanmuldoon6830]

Was there any warning light on pal?

[@lambsmotorworld2599]

Sorry for delay in response. Your message got missed among the others. No warning lights. Just poor heating leading to suspected thermostat failure. In the end it made no difference as it was the water pump. At least now both have been done, the water works are all fine 👍

[@jamesmcrory8990]

I’m changing my radiator coolant temperature sensor as I’m getting a amber car with spanner symbol on dash and radiator fan running constantly but is there another coolant temperature sensor on water pump ? Of is that the other sensor attached to the thermostat? The one you disconnected? my Corsa is exactly like yours, my water pump is well hidden under all the plastic cover etc, I have read the other sensor may be on the right of the engine?

[@lambsmotorworld2599]

I’m not entirely sure. As mentioned I’m not a mechanic. Just someone that likes to “have a go”. There may be a temp sensor on the expansion bottle itself. I’ve had that with other Vauxhalls in the past, so it may be worth checking yours to see

[@frankcastle9866]

Hi mate I have the same problem as you my radiator fan is always running and the code comes up as temperature sensor. I replaced it but the fan still comes on and now the code is for the thermostat. Did u get yours fixed

[@jamesmcrory8990]

Did you have to put any gasket sealant when putting the new thermostat on? Or is it just a matter of swapping the new with old?

[@lambsmotorworld2599]

Hi James. Someone else asked the same question. There was no gasket or sealant when I removed the old unit, so I installed the new unit exactly as I found the old one. I’m not a fan of unnecessary use of sealant. For the model year of this car (2014), that was the case, but other years may have been prepared differently at the factory. Just something to be mindful of if like me you’re going to tackle the job yourself. Good luck.

[@jamesmcrory8990]

@@lambsmotorworld2599 my problem has been I’ve got a car with spanner symbol and fan stays on constantly, I changed the radiator coolant sensor as I though they was the problem, I’ve drove the car a little and I am now 99.99% certain it’s the thermostat as the pipes that go from the expansion tank into the engine coolant is warm after driving, BUT the pipes that come back out of the engine THROUGH the thermostat and into the radiator are cold, which says to me the thermostat is stuck open or closed, also when I check the temperature inside the car on the dash the temperature remains the same low temperature 15c. All the above tells me it’s the thermostat. I check all the relays for the radiator and all is ok I’ve ordered a new thermostat and will replace it, I’ve bought some gasket sealant Aswel just put a little on the new thermostat housing just to 100% sure of no leaks I’ll change that and hopefully they will fix it I also checked the radiator resistor yesterday and that looks good

[@jamesmcrory8990]

@@lambsmotorworld2599 I’ve changed all my brake pads and drums and a whole lot more, the hardest job I did was last year changed my serpentine belt, I had to remove the engine mount all completed but getting the belt off and on was a nightmare

[@lambsmotorworld2599]

It sounds like you know what you’re doing. If coolant isn’t going back into the top of the expansion bottle when up to operating temperature then a stuck thermostat could be a cause. But another one to consider may be the water pump. If this has failed, you’ll obviously get no circulation and could trigger the same symptoms.

[@jamesmcrory8990]

@@lambsmotorworld2599 I’m just a car enthusiast mate, a few years ago didn’t even know how to change a bulb, I have learnt everything on KZbin from experts like yourself, Thankyou:) saved thousands!!! if it’s something like a clutch I wouldn’t even attempt it I’ll take it into a garage but small jobs I can do learnt soooo much off KZbin

[@urbancyclist6134]

Did you not bleed the rad with the top bleed screw

[@lambsmotorworld2599]

There was no need to. Pressure held and there was minimal coolant loss. Replaced thermostat and refilled expansion bottle. My issue turned out to be the water pump so all the coolant was drained and replaced anyway

[@ukcitizen1158]

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