well i am bought to buy a 91 hatch with a 94 ls engine swap the engine is running on a b16 ecu cause the guy was plannin on doing ls/vtec well ne ways it idles at 2000 rpms and i got to thinking about it and could it be the ecu?? i was also think bout it being the idle air control valve being dirty cause he has been running it with no intake/air filter

 

how much u payin? <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jands &raquo;</TD></TR><TR><TD CLASS="quote">well i am bought to buy a 91 hatch with a 94 ls engine swap the engine is running on a b16 ecu cause the guy was plannin on doing ls/vtec well ne ways it idles at 2000 rpms and i got to thinking about it and could it be the ecu?? i was also think bout it being the idle air control valve being dirty cause he has been running it with no intake/air filter</TD></TR></TABLE>

 

he asking 3000 and im hoping that its nothin major about the idle could it be the b16 ecu or is most likely the iacv

 

check the fast idle valve on the bottom of the throttle body pull off the one side and youll see a white plastic screw thing and screw it almost all the way back leave it like a turn or so from all the way.

 

its cant be that cause when you first start it up it goes to a lil less then 3000 then falls down to 2000 so i dont think thats it

 

the coolant line to the throttle body are teed into a line from the back of the throttle body could this be why it is idling so fast ? but i will check the screw and see if it helps any