Mazda engine light on

[matty6660]

Just noticed the engine warning light is on. I've checked everything over and can't see any problems. The oils fine, filters are fine, head should be ok, fuel filler cap is tight, leads and plugs are fine, just had a brand new starter, compression is good, no leaks anywhere, the cat should be fine because acceleration is fine and the fuel consumption is the same as ever.


Is there anything else I should check before getting it diagnosed?

Edited by matty6660 on Friday 28th November 18:38

[Superhoop]

If this is the RX-8 from your profile, then no, the engine warning light doesn't come on if it's due a service...

You say you have a new starter and that you know plugs, leads coils and compressions are fine - does this mean you have recently had a problem with a misfire? If so, how long ago?

It might be something simple..

[*Al*]

Shame you are not local as I would 'read' the fault for free. Most faults I've 'read' are normally emission problems.

[matty6660]

Superhoop said:

If this is the RX-8 from your profile, then no, the engine warning light doesn't come on if it's due a service...

You say you have a new starter and that you know plugs, leads coils and compressions are fine - does this mean you have recently had a problem with a misfire? If so, how long ago?

It might be something simple..

never had a misfire since i've had the car

[matty6660]

*Al* said:

Shame you are not local as I would 'read' the fault for free. Most faults I've 'read' are normally emission problems.

do you have one of those fault code readers? I've seen some on ebay for about £10 but I don't know if they really diagnose the problem or just tell you there is one.

[buzzsaw]

In my experience, check engine light is usually misfire or O2 sensor, but you really need to read the codes

[sim72]

buzzsaw said:

In my experience, check engine light is usually misfire or O2 sensor, but you really need to read the codes

This. Very probably a lambda sensor, but I seem to remember that the pre-cat sensors on these have a tendency to throw errors when there actually isn't one ... electrical issue I think?

[xRIEx]

It could come on with EGR valve problems.

[cib24]

If it is a Mazda RX-8 then I would seek out a specialist and some advice on www.rx8ownersclub.co.uk.

[Superhoop]

where in London are you based?

[matty6660]

Superhoop said:

where in London are you based?

Hounslow