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MX5 Tech diagnostic-Berkshire

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GlennyGills
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MX5 Tech diagnostic-Berkshire

Postby GlennyGills » Tue Apr 06, 2021 1:50 pm

Following my annual cat converter MOT failure, I have been advised to look into the oxygen senosor and the ecu’s water sensor. Does anyone have an MX5 Tech diagnostic check device near Berkshire that I could come over to check?
I understand that it can read the oxygen sensor and would let me check to see if that is the reason.

I have ordered replacement parts for the two sensors that I will change over,but it would be good to know as well.

Thanks
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust
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Re: MX5 Tech diagnostic-Berkshire

Postby Mazda Mender » Tue Apr 06, 2021 8:52 pm

You could use a flash code test...it will tell you the same.
M-m
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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 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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Re: MX5 Tech diagnostic-Berkshire

Postby GlennyGills » Wed Apr 07, 2021 12:19 pm

Thanks, I thought the diagnostic tool gives a realtime readout. I will check for fault codes when I get it back.
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blackyb
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Re: MX5 Tech diagnostic-Berkshire

Postby blackyb » Wed Apr 07, 2021 2:03 pm

As recommended by our leader Mm.

I bought one.

It was easier than remembering to count and I kept running out of fingers.

Best bit of tech to have in the tool box or in my case in the glove box.
1993 1.6 Eunos Roadster (gone)
1998 UK Mk 2 1.6 (gone)
2003 1.8 SVT Sport (Why did I sell it - cos the wife said so!!!!)
1991 1.6 Eunos Roadster with a bit of bling.

Life is a journey, best travelled topless in an MX5!!
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Re: MX5 Tech diagnostic-Berkshire

Postby Mazda Mender » Wed Apr 07, 2021 10:45 pm

It will give a real time graph John, as a mending tool it is great, but I use it a lot, so for a one off check it is worth finding someone local to run through tests as you say..it's just a shame you are not local to me.
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 ,
Mk 2 .1/4 Roadster 99 black & gold V.S 1.8 being rebuilt,
Mk 1 Eunos 90 1.6 (claimed by daughter)
MK 2.1/4 Blue V.S Roadster 1.8 99 ...being rebuilt

http://www.mx5oc.co.uk/ http://www.mx5nutz.com/forum/ http://miata.net/ http://www.autolinkuk.co.uk/
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GlennyGills
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Re: MX5 Tech diagnostic-Berkshire

Postby GlennyGills » Thu Apr 08, 2021 10:44 am

Just got the car back with a shiny new Cat. The fail results for the old cat were caused by the CO %vol only, around 0.54% to 0.76% on the various idle runs. Strangely the Lambda value was Ok at around 1.01-1.02. This kind of indicates that perhaps the O2 sensor is working correctly, is my thinking correct?
Anyway, as I said I have ordered new parts so I will get them fitted. ( I will do a LED check for any ECU faults as well.)
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust
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GlennyGills
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Re: MX5 Tech diagnostic-Berkshire

Postby GlennyGills » Thu Apr 08, 2021 2:49 pm

Hi,
Got the car back and tested with the good old LED.
I think I get
10, 14, 14, 13

I cannot see a code 13 in the docs anywhere.
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust
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GlennyGills
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Re: MX5 Tech diagnostic-Berkshire

Postby GlennyGills » Fri Apr 09, 2021 4:30 pm

I have just disconnected the battery and pressed the brake pedal for around 10secs to clear the ECU. However, even without starting I get 10 14 14 13, which doesn’t make sense to me. :sad:

The good news is that the car runs fine, but eats cat converters every year.

I guess I will have to save up for a MX5 Tech diagnostic tool. :violin:
'96 Gleneagles MeisterR Coilovers - engine bling stainless mx5parts full exhaust

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