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-   -   Replacement of coolant reservoir assembly (https://www.rx8club.com/series-i-tech-garage-22/replacement-coolant-reservoir-assembly-143334/)

andreasy 04-15-2008 07:09 AM

Replacement of coolant reservoir assembly
 
I am facing the problem with radiator coolant random light trigger so, I am about to order the complete reservoir assembly to replace it. I have read here that the sensor is included in the reservoir.

I'd like to ask now if it would be easy for a non-meachanic to replace this unit and if there's any special step I should be aware of, especially in regards to the water that is already in the radiator. (i.e should I empty the water first from the radiator?).

In order to remove the reservoir, do I just work on the top of the vehicle or are there any hidden bolts on the bottom that need special tools?

Any extra info would be helpful

mysql 04-15-2008 07:42 AM

its just two nuts and two coolant hoses. So its extrmely easy to replace

Mazurfer 04-15-2008 07:51 AM

Yep...very easy, you can do it. Shouldn't take long at all or be difficult in any way at all. Go for it!

andreasy 04-15-2008 08:03 AM

clear enough.
thanks a lot

mysql 04-15-2008 08:11 AM

the two nuts are in plain view on the top. The two coolant hoses are on the left of the reservoir. Just use pliers to loosen the clamps.

I was actually hoping you had a recommendation for a REPLACEMENT of the OEM with something aftermarket. The OEM one turns brown after a while and is unsightly.

Mazurfer 04-15-2008 08:14 AM

Well.......while it makes it really difficult to check level(flashlight required), you could paint it black like I did.
I did this when I did the wiper reservoir because I couldn't stand it.

andreasy 04-15-2008 09:05 AM


Originally Posted by mysql (Post 2407472)
the two nuts are in plain view on the top. The two coolant hoses are on the left of the reservoir. Just use pliers to loosen the clamps.

I was actually hoping you had a recommendation for a REPLACEMENT of the OEM with something aftermarket. The OEM one turns brown after a while and is unsightly.

It gets brown because of the high temperature. I don't believe though that there is any type of transparent plastic that will not be affected by the high temperature.

andreasy 04-29-2008 08:34 AM

I finally did it and at the same tome I emptied the whole radiator and changed coolant (that was easy). I must say it was really hard (for me at least). First of all, in order to get out, I had to take the battery and its enclosure out. It took me a lot of time to figure out how to disassemble the enclosure and take half of it out since the base cannot be taken out. Then the hoses were so short that they also added some difficulty. Of course next time will be much easier.

Is the battery needed to be taken out in normal scenarios or is it just mine? (I replaced it with a stronger one but I don't remember the size of the original although I believe it's the same size).

For the time being I am filling with coolant.

nycgps 04-29-2008 08:48 AM

So easy even caveman can do it.

bose 04-30-2008 09:53 PM

how much was the part? mine is doing the same thing.

MazdaManiac 04-30-2008 10:35 PM

Yes, battery needs to come out.
They are $150 or so.

bose 05-01-2008 08:55 AM

Good times. Thanks MM.

chr1s 05-21-2008 11:55 AM

Is there an aftermarket coolant reservoir available for our car? I've been searching on here and on the intarwebz and can't find anything.

I hate the stock one.

nycgps 05-21-2008 11:59 AM

u can use any bottle, as long as u can retro fit it.

Just make sure u have enough coolant in it thats all.

chr1s 05-21-2008 12:12 PM

that would require fabrication work on my part and I'm waaay to lazy for that!

hehe. thanks though. :)

zacknolden 06-24-2009 01:46 AM


Originally Posted by andreasy (Post 2407414)
I am facing the problem with radiator coolant random light trigger so, I am about to order the complete reservoir auto engine assembly to replace it. I have read here that the sensor is included in the reservoir.

I'd like to ask now if it would be easy for a non-meachanic to replace this unit and if there's any special step I should be aware of, especially in regards to the water that is already in the radiator. (i.e should I empty the water first from the radiator?).

In order to remove the reservoir, do I just work on the top of the vehicle or are there any hidden bolts on the bottom that need special tools?

Any extra info would be helpful

Were you manage to get yourself or made a coolant reservoir for your car? I am making one right now.

nycgps 06-24-2009 11:42 AM

I sell mine, 140 bux shipped :)

Jeff_Blair 07-06-2009 01:22 PM

I have to replace mine as well, the lip is cracked.
I just called the dealership, and they're about $225... ouch

I called a junk yard, and they have a '07 with one. Do you think that one will fit in a '05?

nycgps 07-06-2009 02:04 PM

Its all the same.

Raptor75 07-06-2009 03:04 PM

I think I have the same issue, the Coolant low light keeps coming on in express way driving but the coolant level is fine. Mines under warranty so I'll let the dealer have the fun.

04RX8man 07-06-2009 04:42 PM

^prob a sensor....dealer should handle it no problem

JMKuco 11-08-2009 09:12 PM


Originally Posted by mysql (Post 2407440)
its just two nuts and two coolant hoses. So its extrmely easy to replace

Hi,

UP !!
I do not have 2 hose but 3 !!
There is a 3rd one going strait to the radiator...is the coolant going from the reservoir to the rad or from the rad to the reservoir... :Wconfused

nycgps 11-08-2009 09:15 PM


Originally Posted by JMKuco (Post 3311723)
Hi,

UP !!
I do not have 2 hose but 3 !!
There is a 3rd one going strait to the radiator...is the coolant going from the reservoir to the rad or from the rad to the reservoir... :Wconfused

One to the bottle of the bottle, it goes into the Radiator.

one to the left side of the bottle, Its coming from the Engine (its a bypass,whatever)

and the last one? well you dont have to disconnect that(its right next to the Cap)

JMKuco 11-09-2009 06:38 AM

yeah but there is an other hose pluged directly to the top of the radiator... and I don't know where to plug this one on my new collant tank....is this a outcoming or an incoming ?

Smurfy 01-21-2011 08:40 PM

Removing mine too
 
I'm relpacing my coolant tank too. I took a look at it and it does look easy, but what about the water that is in there already? Do I just removed the tank and empity out the water? If I do, would that do anything to the radiator?:Wconfused


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