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Greetings and welcome to menders, this site was built for every owner that might need her to help keep those bills low and also keep them on the road where they belong, she is run by very passionate enthusiasts owners for passionate enthusiastic owners, see her like a on line garage, there is a lot of tech stuff hopefully explained for everyone to use, if there is something you cannot get your head around, or you feel that there is a strong walk through guide missing that needs creating by one of us or from yourselves, please let us know, we are also on false book and youtube, which as short tech vids to help, and again if you feel there is a vid that would help please get it touch.
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M-m

How to test a MK 2,2.5 NB cooling fan.... (for Andrey)

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How to test a MK 2,2.5 NB cooling fan.... (for Andrey)

Postby Mazda Mender » Sat Jul 14, 2018 1:06 pm

There is so much crap out there on this subject for something so simple.....Yes if you press the A/C it should trigger both fans??? now that is all well and good "IF" your A/C works??? Or your pride and joy was built with it as most UK spec Mx-5's are not, or it has been removed from your Japanese import ???

How ever The MK1 NA can be bridged/looped from the diagnostic port, Now let me make this 100% clear "YOU CAN NOT DO THIS ON A MK 2/2.5 NB" regardless of the internet crap, they are wrong and will not help you solve a issue you are trying to resolve.

So onto how to test....

IGNITION OFF...

Tools needed...
1 x paper clip...

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You do not need to remove anything for this, all you need to do is locate the temp sensor which is at the back of the engine under the coil packs, working from the passenger side( or drivers side for our Miata friends across the pond) unplug the triangle plug with 3 wires going to it 1x purple ,1 x red ,1 x black with red chaser..

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Next get your paper clip you robbed from work and open it out to make a U shape, this will be our bridge/loop...

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Insert the two ends of the paper clip into the ports of the plug of the black with red chaser and red wires....

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Now put the key in the ignition and start the Roadster, the fan should run, if not it is fudged or the paper clip is not making a good bridge/loop turn off the Roadster and try it all over again, if it definitely does not kick in then yes it is dead.

Just a foot note.... the fans should draw air from the front through the rad or suck not push through from the engine bay...

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As always any questions please feel free to ask, it is what we are here for...
M-m
The Disclaimer:-
This post is a natural product made from recycled electrons. The slight variations in spelling and grammar enhance its individual character and beauty and in no way are to be considered flaws or defects, the articles/answers/comments are provided for information purposes and they are not intended to substitute informed professional advice, I or mazdamenders.net cannot personally be hold responsible for any damage occurred from following this procedure or any injuries from it. Proceed at your own risk.


Mk 1 Eunos 93 black V.S II 1.8 ,
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Mk 1 Eunos 90 1.6 soul red ..f/ build
MK 2.1/4 Blue V.S Roadster 1.8 99 ..
MK1 1.8 ,white import.. (Ashleighs)
MK1 1.6 yellow J ltd import.f/build
MK 1 1.8 black Tokyo Ltd..f/build


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