AusAndrew

Hello everyone, new RX8 owner here.

I just bought myself an '03 RX8 which has a GReddy turbo kit installed by Promaz about 18 months ago. I took it for a drive and had it inspected by Promaz the week before I bought it so I shouldn't expect anything terrible to happen.

However, after washing it the day I bought it, I noticed the CEL on. It could be nothing, and just be to do with aftermarket intake/exhaust, as I've seen other people commenting on on the forum. On the other hand, it could be the beginning of something else that I need to nip in the bud before it becomes a bigger problem.

I'm hoping someone in Melbourne has something like a DashHawk or CanScan which I could borrow to plug in and check the CEL. I'd rather avoid paying $100 or whatever it is to get a shop to check if I can avoid it. Let me know and I will make the trip out to visit, with your preferred beer/drink/food in hand.

takahashi

I have a bluetooth CAN scanner I need to find the program and get it install first. Give me a PM with details and I will call ya tomorrow. I should be free sometime tomorrow.

I work in Heidelberg area. Can meet up somewhere after work.

AusAndrew

Thanks; PM sent.

auzoom

I am in Eltham/Diamond Creek after 5 and St Kilda Rd during the day.

takahashi

It is done Andrew....

We should have a catch up sometimes.

AusAndrew

Thanks very much for the help Taka! (Thanks for offering AuZoom)

The CEL light came back on after refueling on the way home, so I will get myself a cheap code scanner soon to recheck.

For those playing at home the codes were:

P0302 Cylinder 2 misfire detected
P0410 Secondary air injection system malfun
C5048
B9304

The 2nd seems pretty common on the forum, to do with the air pump which primes the CAT quicker on startup. If this is the only problem, I'm not fussed.

The 1st was a little more worrying, and could account for the odd power loss and erratic idle I get intermittently. Some browsing of the forums and elsewhere suggest that the usual suspects are:
-plugs
-coils
-wires
-injectors
-fuel pump (maybe even that I was <1/4 full of fuel)
so I will check them in that order if that code still exists.

I'm not really sure what to make of the 3rd and 4th, the forum doesn't have any threads mentioning them, and the internet is full of a lot of useless info on other uses of those number/letter combos. My orignal understanding was that P-codes are for engine and drivetrain, so if they persist, I will worry about them after the others.

I'll update further when I can recheck the code to see which has returned, then check some basic things related to it.

Andrew

takahashi

Andrew,

Mine was about $180 shipped from the UK. OBDkey.com I think.

Check out Jaycar in the city.

Good luck.

If the same codes happen, look at the tune first. I only had a limited time yesterday and everything was fine to me (timing advance and load trim) in the 5 min run. auzoom may of some help at least he knows a bit of tuning.

auzoom

Check for vacuum leaks. Pretty sure the B & C Codes are triggered by a non-mazda or non-OBD compliant reader.

Cheers

Andrew

astro

PO410 Check whether the secondary air pump makes a high pitch noise when starting a cold engine. The bearings inside the air pump will be worn out hence air output is less.
You can recondition this yourself, just purchase the bearings online and it is fairly simple to repair. A new air pump cost about $800. 2 bearings $25.

auzoom

Joel...Is that you?

AusAndrew

Thanks all for the advice.

Last time I checked it was definately screaming at me with a high pitched buzz. A simple bearing fix seems the way to go, from other threads as well, but I don't trust my own mechanical ability to fix it.

If someone was willing to help crack it open I'd definately be up for it.

As a general comment, I'm waiting on a CAN fault reader from ebay to arrive, so that I can confirm which codes are consistent vs intermittent.