MX5 NA8 no spark issues

[ledgehammer]

Hello all,

This is my second post but I'm getting quite frustrated at my favourite thing in the whole world!

So I had to get my MX5 NA8 towed because it wasn't turning on. I called Allianz roadside assist and he said it was either the coil pack or crank angle sensor as there was no spark. So I went to Japan. Well this was a holiday and i thought i would fix the issues when I get back.

Im back and I called up MX5 Mania and they sold me a coil pack. It was a good price and that didn't fix the issue. I will keep that part as they are really hard to get at a good price. I called them back and they told me its probably the CAS. So today I will take my CAS to them and they will put a new chip into it.

Anyone else have any advice what what could be wrong? I have checked the ECU for common things like rust, and frankly it looks like its in very good condition, no rust, no evidence of water damage whatsoever.

At this stage i just want my pride and joy back on the road for the rest of summer!!

[Red Dragon]

It may sound silly, but did you check the simple things like plugs and leads as you have not mentioned them

[ledgehammer]

Hello,

The leads could be the issue, however the spark plugs look find, no corrosion. But there isn't a spark from any leads at all. Unless all the leads are gone? Plus the spark plugs aren't wet either.

So could be it be;

1/ the ECU is busted?
2/ The wiring loom is busted
3/ The EFI relay is bad?
4/ The CAS is bad?

3, 4 Will be cleared today. Just waiting on a call from MX5 Mania to confirm they have a part read for use.

Also on a possibly un-related note, the breaks seem to be locked on for maybe the first 5 minutes or so driving. Then it seems be all okay. Maybe its the break lines or the breaks themselves? I haven't really taken the wheels off to have a look yet.

[Magpie]

No wet plugs means no fuel being injected. The CAS controls the firing of the injectors. Buy a noid light and check the CAS.

[ledgehammer]

I went to see MX5 Mania today and they put a new chip in the CAS and also gave me a good deal on an EFI main relay. So hopefully it will be resolved by this afternoon... Fingers crossed

[Magpie]

I did not know you could chip a CAS, I just keep an OEM spare.

[ledgehammer]

Apparently you can, so that makes life easier? I had a good chat with the blokes and Mania and they said OEM for the whole module is 500+ so i guess if this works its a cost effective solution.

[ledgehammer]

Just a quick update, after getting the CAS back on (and properly aligning the dogs ears... which was a PAIN) I turned the key to ignition, the radio came on, so i turned it off. I hesitantly turned the key... slowly... slowly.... slowly and BAM it worked! Yay!



I then proceeded to put on the new steering wheel I got from Up Garage when I was in Japan a few weeks ago and it works better than ever.

Still the breaks are making some strange sounds, but I'm pretty sure the pads are worn away.

[speed]

Glad you're sorted. Just so you know, the things that stop your car are called brakes. Break is to be used for something that is broken ;)


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[Mr Morlock]

There was a recent thread on rear brake pads sticking.

[ledgehammer]

Glad you're sorted. Just so you know, the things that stop your car are called brakes. Break is to be used for something that is broken ;)


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Hahaha Oops! My bad.

Also after driving it for a while i got home and there was a big water leak.... Im not sure how that happened. Does the viscosity of the oil have any impact? Im using 5w30 which is a bit thin for the hot weather in Sydney.

Plus I will search for the breaks sticking and I will post an update on what my solution is.