Engine alert on dashboard

[beast1]

hi all

I got engine alert (that yellow one on the dashboard) few days ago. I stopped the engine and waited for about 2 mins and started it again. No more alert. I've been driving after that for about 2 days and no problems.

what could that be? what r the first things to check ?

I think to run ECU diagnostic first, right?

If so, is this http://www.powerlink.co.nz/~graeme/faq/14.html the correct manual? My skyline is R34 GTS-four.

thanks!

[Sciby]

Engine light will come on if oil is low... might want to check oil pressure, temps, etc.

[beast1]

Engine light will come on if oil is low... might want to check oil pressure, temps, etc.

I though there is oil light is oil level is low. But it's not low.

Oil pressure is in the middle when the car is hot or close to right side when cold or accelerating really high. I don't know how to check oil temp...

What else can I check?

thanks

[beast1]

ok, I've run ECU diag and got code 21. (two long flashes, one short)

21 Ignition circuit

What should I do now? How to check/repair.

please help as i'm new with skylines

[OMRAN]

ok, I've run ECU diag and got code 21. (two long flashes, one short)

21 Ignition circuit  

What should I do now? How to check/repair.  

please help as i'm new with skylines

i have r34 ... i had the same problem .... i was changing the plugs ... after i finish that .. i tryed to start the engine ... it started but gave me the check light .. did diag. and the same 21 ..ignition ..anyway the coils were pluged perfect

i unplug the coils wire and replug them again .. and every thing was cool ...

i didnt know why .. and thats it ..

am not sure about u'r problem ... !!

[beast1]

sounds like the same....i'll try to replug them

thanks

[beast1]

one more thing...

when the engine light is on, car vibrating slightly on idle

idle still stays fine (0.8)

after restarting engine light is gone and vibration gone too

any ideas?

[GTRsean]

one more thing...

when the engine light is on, car vibrating slightly on idle

idle still stays fine (0.8)  

after restarting engine light is gone and vibration gone too

any ideas?

One cylinder is not firing, so you will get a slight vibe.

The computer will compensate for drop in idle and it will try to idle like nothings wrong.

Try disconnecting plug packs one by one and find out which cylinder it is.(If that doesn't help the other thing it could be is your ignition module).

Less likely: Have you checked your spark plugs.

[gaki]

How do you set the ECU on the ER34 RB20GT to go to the Mode II diagnostic? I can't seem to find the screw to turn switch to kick into the Mode II diagnostic.

[The Dan]

I would start with the Self Diag on ECU. Then pull all your plugs out and replace them after checking individual ones.