splutter missfire

[cefiro]

hey guys I am wondering if you can help me. My rb20 is ****tering alot on idle and low revs at light throttle under 3k revs, the tone of the engine also sounds different and there seems to be a lose of power (maybe in safty mode). I have always had the cold start stammer which goes away but this is different. I took it for a run up the freeway which seemed to cure it untill the next cold start so I dont think its a coil pack, and the plugs were changed about 4k km ago (iridium .8mm). I took the CAS off a little while ago and cleaned the contacts which cured both but then its come back worse so I am thinking it could be the CAS gone. Will check my TPS as well from memory 0.5mv idle and WOT 5mv.

My AFM is clean as so should be that.

Anyone got any suggestions???

I did get the CAS code on my ecu a while ago and will check it again. could this be causing the problem.

CHeers guys

[cefiro]

Ok looks as though I have stuffed knock sensors, I got the 34 code and then I reset my ecu, started it again and got 34 code again, check both knock sensors both seem to be plugged in and wires attatched, could this be causeing my missfire problems?????

spose it would retard my timing if they were both stuffed causing the misfire what do you recon, anyone ever replaced them, they are a pain to get to so replaceing them would be a killer. what do they cost???

anyone?????