Well I purchased my crv with all the coolant lines plugged, the one coming off the head/upper radiator hose and the water neck nipple..


The inlets and outlets of the IACV were just open, no hoses. and so was the FITV, it was open as well.. I hooked up everything correctly and all lines are hot after the motor warms up so I know the coolant is reaching the FITV and the IACV. I even cleaned out the IACV really well before I connected the coolant hoses.


I've gone into my hondata s300 and I can't control the IACV at all! I'm familiar with the program and I've tuned multiple cars so the software isn't at fault. But when I unplug the IACV it throws a code (like it's supposed to) but doesn't change the idle or anything. Where should I start?

 

For starters, the IACV does not need coolant to function correctly. What exactly is the problem...high idle? Surging idle?

 

No surging idle, when i bought the vehicle he had the car idle at around 1,200-1,300 VIA throttle body screw. I turned it down where it idles at around 1,000. then when the a/c kicks on it idles around 800-900. But sometimes the car dies when I throw it into neutral going to a stop because the rpm's dip down so much.

I just want to IACV to work so the rpm's are smoother and don't drop so fast between shifts.

 

Did you follow the service manual procedure for adjusting the idle speed? The idle speed should increase not decrease when the A/C is running.

 

^^ would you mind directing me towards that?

 

bumper.