Idle Air Control Valve Question For The Intelligent Ones

[walkoau]

hi guys

im currently putting a greddy plenum chamber on my r34, however these are only for r33 so ive had to change the fuel rail and injectors to r33 style and also change my iac valve to r33 style. i have attached some pics hoping that some one can tell me what the part in the picture does, the theory of how the iac valves work are the same on r33 and r34 but the back sections are controled differently....one (r33 style) is electrically controled while the r34 style seems to be coolant (thermal) controled. can anyone tell me what this section of the aic valve does?

thanks

Justin

[walkoau]

hi guys

im currently putting a greddy plenum chamber on my r34, however these are only for r33 so ive had to change the fuel rail and injectors to r33 style and also change my iac valve to r33 style. i have attached some pics hoping that some one can tell me what the part in the picture does, the theory of how the iac valves work are the same on r33 and r34 but the back sections are controled differently....one (r33 style) is electrically controled while the r34 style seems to be coolant (thermal) controled. can anyone tell me what this section of the aic valve does?

thanks

Justin

anyone know?

[WazR32GTSt]

i believe that it is the FICD valve and sooths out the ilde maybe

a search of "FICD valve" might get you some more info

hope that helps!

[walkoau]

i believe that it is the FICD valve and sooths out the ilde maybe

a search of "FICD valve" might get you some more info

hope that helps!

what does FICD stand for?

thanks

[WazR32GTSt]

a quick search reveales its called hte "fast idle control device", or "FICD"

not present on the R32 but present on the R33/R34 engines...

searching SAU or other forums like aus300zx.com might get you a lot of info, i don't know anymore, sorry

[walkoau]

anyone know what this section (circled in red) of an r34 idle air control valve does? it seem to be themal controlled, it has coolant runing through it. pics attached.

thanks

Justin