So im new here, and to Skylines in general.
Not sure if this the right section, but here goes.
Quick run down on car,
1993 S2 R33
RB25DET manual
Pod Filter
3" cat back exhaust
rest is stock.
Problem is.
its very hard to start first thing of the day, sorta like a carby car you gotta hold the throttle while cranking. once it kicks in the revs will jump to around 1200 till warm. rest of day its 1 crank start.. weird.
Once warm the idle drops to 900, all seems sweet. Till you touch the throttle slightly, the revs drop and you can actually make the car stall by doing this. press throttle slightly more and it will spring to life, sorta feels like a flat spot from 900-1000?. if you give it a slight rev to say 3-4k and back off the revs will drop to 500ish and then bounce back too 900 and hunt around the 750-950 mark. couple small revs to "clear it out" and she idles fine at 900.
Now before this the idle was hunting around the 500-900 mark, i pulled the ACC assembly out as per the DIY on here. cleaned it all, followed the idle reset guide and waaam, the idle is great at a solid 900. but then it came back
Im at a loss to what to check next? im thinking give the AFM a clean as per the guide on here,
Also curious if coil packs will cause such a issue?
Any help is appreciated, or links, guides, directions ect.
Dan