So I posted previously about a similar problem but It has complicated more so lol.
Ive been having some idle trouble with my 97 Del Sol (b16 turbo, hondata,....) It starts at 2000 RPM after 10 seconds drops to 1600ish I Believe I have resolved the only vacuum leak. If I block the intake it will die. If i start it with the IAC unplugged it will idle at 1000 RPM. Adjusting the throttle screw does nothing.

No matter what I do the IAC leaks (sprays actually) coolant. (from the hoses I believe). I took it off and cleaned it with part cleaner replaced seals and it leaked so bad that coolant found its way out my exhaust as thick white smoke somehow. I finally decided to RTV the $h!t out of it, hoses and everything. At first nothing was leaking when started. I revved it up and sure enough coolant found its way out the hoses once again.

Any input is greatly appreciated, this damn sol is driving me crazy lol.

 

Replace it.

 

Thats what I was thinking, the local parts store wants $140 for a new one. That is ridiculous lol. What I cant figure out is why is it leaking. There are no cracks, the hoses are fine. It sprays coolant as if there is to much pressure in the coolant system. Could that be caused by a bad thermostat? Its quite new, but there is also coolant leaking off the right side of the block (probably from the water pump). The leaking gets worse as things get warmer.

Thanks for your input also, your replies on other people posts have helped me out on several occasions.