I see I see.

I touched this morning seems wet(not watery wet) to me. Hopefully thats the reason behind it.

Wow.. Do I need to dissemble it or I just sand it without dissembling it. If need to dissemble, I will just let the mechanic do it next weekend when I sent for repair. Will save a lot, but my clumsy hand might damage my myvi more. haha.

Well you will have to replace both the upper hose and bypass hose. The steel pipe just work as connector for both hoses so it is extremely easy work with because myvi has plenty of space to work on compared with many other cars. It just 5 to 10 minutes work for the hose replacement.

I prefer DIY because I can thoroughly clean and replace coolant at the same time. Most workshops won't do it properly as they will mix city water with antifreeze/inhabitor. They won't take the initiative to clean the engine cooling system unless thermostat is removed. TO DIY or not it is up to you eventually.

This post has been edited by therain01: Jun 11 2017, 01:44 AM

wow. I have to thanks again for the great explanation.

Can I request to clean the engine cooling system? Then for sure there will be extra charges. So hard to take the first step out to DIY. Maybe I will try to look for some videos on Youtube first. haha.

Okay finally my reservoir tank is normal now. Will give some updates here. Basically went to radiator workshop twice for repair.

The first time. I changed all my hoses and connectors for the radiator system. Basically its rusted already, so I decide to change this first. Can even DIY i believe as suggested. But I ended up doing at workshop because seems like quite complicated for me. Total damage about RM200. However, my reservoir tank still reducing day by day. Although not as much as before but still reducing. So I decided to go to the same workshop again to check.

The second time, the workshop guy saw some leakage at radiator top cap minor leakage. This is also suggested here in lowyat (Lowyat people are all pros). So for peace of mind and the repair not costly, will repair it on the spot. I have the confidence to decide on the spot mainly due to the inputs from lowyat here. Total cost of repair is RM150. Also my mistake here, should ask the shop to check first during the first repair, instead of pandai2 ask him straight change the hoses and connectors, then can straight solve the problem in just one visit. After repair, my reservoir tank back to normal and happy myvi user now. haha

Really thanks a lot to you all for the knowledge and input. Too many people to thanks until cannot tag all.

This post has been edited by tboonc: Aug 16 2017, 02:33 PM

No harm changing the radiator hoses and pipe since myvi one prone to rust.

Hi my friend, can I know roughly how much to change a new genuine myvi radiator tank? Cos I suspect is time forms 9 years myvi to change a new one due to leakage happened ...

Where's the leaking point , has source of leaks been identified by a competent mechanic ?

This post has been edited by zeng: Aug 21 2017, 10:27 PM

Ya.. is at the upper part of the tank... there are some color water mark, believe is coolant... and last week mechanical found out water in tank have drop massive....

my mechnicl quote me material only rm388....(genuine myvi manual)

wow.. is much more cheaper than my mechanic quoted me.. your is it genuine myvi part?

Colored water mark is a strong indication of leaks.
If the leaks is at the radiator top cover made of plastic, mechanics normally recommend replacing complete radiator unit.
Having said this, one need not go for 'genuine original from myvi' really as equivalent replacement unit does the job as well.
Agreed with above that RM388 is a bit pricey, I personally wouldn't pay this kind of price though.

At RM388, that's on the high side ......for 'non-factory unit' .


This post has been edited by zeng: Aug 22 2017, 11:53 AM

I changed my Myvi radiator top cap at RM150 + RM25(coolant). The work includes remove the radiator from car, wash and replace top cap.

Did you go to Perodua SC? Because from my experience, they can only replace the whole radiator which will definitely be costly. They cant repair by parts.

As suggested previously by forumers here, I believe you should look for radiator workshop.

thanks for knowledge sharing~~

ic.. yours is just part of the tank..

Since you said upper part of tank leakage which is a common problem for many myvi users here, you can just replace the top cap if you are having a tight budget.

Are you refering to radiator cap.. ?
http://www.ebay.co.uk/itm/DAIHATSU-SIRION-...IkAAOSw~OdVXY~A

This you can DIY, no need send to radiator/mechanic shop.

TS, mind upload picture on the leak spots ?

Sorry for the confusion, what I mean is the upper part of the radiator. I dunno what does it call, it seems like a cap or cover closing the top part of radiator. I think I shouldnt use the word 'cap'.

That I call top cover or top header , covering an entire top areas of the radiator core assembly.
Agree that replacing top cover/header is cheaper than replacing complete radiator assembly.

hi all sifu,
i went for service my myvi aircond and the mechanic found out that my coolant reservoir contain lubricant oil.. I then went to my mechanic to check my gasket and he said it is okay and ask me to continue driving. Did anyone encounter this before?