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R33 Gts-t Series 2 Fault Code 21

omy-33

By omy-33,
in General Maintenance

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omy-33 Community Regular

omy-33

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Hey guys, past week or so the car has been runnng odd, you know how sometimes you can just tell?

Well anyway the problem has really only started after I put a Apexi catback exhaust on the car.

The car drives fine no misses, no spluttering. Fuel consumption sits about 9-10 lts on the highway which is about right.

I have in the last 12 month put splitfires in dues to stock coils dying. New iridiums went in less then 7000klms ago.

The only real symptom it has is when shifting gears or decelarating from hard acceleration the exhaust pops. Now this symptom could

also be from a smaller cat that I am yet to change. I have a 3 inch system with a 2.5inch cat. Anyway after a "hunch" I looked at

the fault codes on my ecutalk display and it came up with code 21 ignition signal.

I know this could b a number of things like wire loom, coilpacks, sparkplugs, loose ecu or bad earth.

How can I test my coilpacks and wire loom without a volt meter?

I'm opening the bonnet up today an tinkering around to see if there is any damage.

But for the life of me I don't really know what's wrong with it. So any advice will help.

Will check sau every hour or so as I work on it. Thanks guys.

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https://www.sau.com.au/forums/topic/324627-r33-gts-t-series-2-fault-code-21/
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omy-33 Community Regular

omy-33

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just moved the car in the garage to start work on it, the ecutalk readout was, 13 degrees celcius, 1112rpm, timing was high 25(little zero) B.

afm 1.530v, TPS 0.34v, 02 0.77v, aac 20. dunno if that info will help at all, also i did notice yesterday sitting in traffic the car which usually runs at a temp of 82

it had jumped up to 86 and then after driving out of traffic onto the highway it sat on 84. I know it sounds trivial but I thought I would add as much info as I could.

timing seams really high...

Edit = last few days car also would randomly idle high (1500-2000) until i gave it a quick pump in nuetral then it would die back down to 700-800

Edited by omy-33
omy-33 Community Regular

omy-33

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pulled all plugs and coil packs, coil packs are slightly darker on one side (could just be dirt) and plugs seam ok, the only real thing i saw was a bit of oil build up in the little hole/valley of cylinder one, i'v cleaned it all out but i am not sure how it got there. i have taken lots of photos too if anyone is actually interested..

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