Check Engine Light Rb25

[NI55ANLUV]

Hey folks, I did a Brisvegas-Hobart return road trip over chrissy new years. Nothing like the great open road

A couple of times when I planted it in 5th gear to pass a car (generally uphill, loaded engine) the check engine light flashed briefly. I'm running a Power FC. Had good fuel in the tank, no more knock than normal (which is pretty much non-existent). Ignition timing is slightly higher than it has been though. It was last tuned about 18 months ago and alls well since then. Got me buggered, is something on the way out perhaps? Something my tuner overlooked? Thoughts appreciated.

[Bliksem]

Reaching close to the peak of something... could be injectors, AFM etc... should All in the FAQ

[nIsMo86]

Is your power fc setup so that the check engine light flashes when it pings? Mine is on my R32 which im sure is similar.

[NI55ANLUV]

Yeah it is. Shouldn't the knock sensor show something when the engine pings? I made a point of watching the gauge when the engine light was flashing, but no noticeably higher readout on the hand-held. The ignition timing has been at or around 10-15 for 18 months, but has jumped up to about 45-50 though. This is a good sign of pinging isn't it?

[Bliksem]

60+ is definate pinging, thats the only time your engine light will flash. You said you were only seeing next to no pinging which rules that out. The only other thing it could be is reaching the peak of injectors, fuel pump or something else. My guess is Injectors - text book example as you said it was occuring uphill, loaded engine etc.

[nIsMo86]

I'd suggest you check your timing first and go from there.

[Bliksem]

Why does my engine light flash when I drive with the PowerFC?

The PowerFC uses the factory engine warning light to alert the user of "upper limit" or ceiling values in the engine systems. Things such as airflow meter max value, injector max duty, excessive knock will cause the engine warning to flash. Usually the engine flash is in a sequence of 3 flashes each 0.5 seconds apart. Should you experience this you should review the hand controller max values (press down when in monitor mode and displaying values to see the max values for each) and consult your tuner immediately. Excessively high knock can cause engine damage. Running on max injector duty can also be fatal so speak to your tuner. Aggressive tunes that are tuned around winter temps/airflow and being run hard in summer may cause these symptoms if the tune is very aggressive and on border line of maxing out the stock components. This is only hearsay but I have seen this from at least one or two members.

Taken from http://paulr33.skylinesaustralia.com/docs/...erfc-faq.htm#32

Edited January 10, 2009 by MintR33