nightrider93ex

I recently purchased a B16B swap and unfortuentely the IACV is pretty much no good. Found some aluminum metal shavings in it so I put it aside for replacement.


A buddy of mine gave me a spare that he had said it if off an "Acura Integra LS". The obvious difference is in the diameter of the air inlets. Not entirely sure what motor its from though.


I've installed the motor and rewired the original wiring harness or engine loom exactly according to Helmes Honda manual. I'm 100% sure the wiring is not an issue yet I still got a code 14 for the IACV.

A neighbor if mine then let me borrow another IACV said it was off of a Honda Civic Si B16A2 but ironically it was the same in every aspect to the "LS IACV".

Is using a different style IACV the culprit here? There is no doubt in my mind that these sensors are 100% operational as they were both removed from properly working engines.

One doubt that I have is poor circulation with the coolant. Reason being is that before the initial startup the radiator was really the only thing filled with the coolant system which is 1 gallon, the complete system I was told takes around 2 gallons. Can poor circulation of the cooling system affect idle properties via the IACV?

Another question I had was this...if infact using a different style IACV is the issue then does anyone know any other USDM motor that uses the same style IACV without any issues?

I found this one from a 94-97 Honda Accord V6 that looks identical to the Oem CTR piece.


I really don't feel like ordering a brand new IACV from Honda Japan as i'm sure it will be very costly. Any replies to this thread are greatly appreciated! Thanks.

nightrider93ex

Anyone had any similar stories and found the solution?

nightrider93ex

Okay maybe not well can anyone tell me if the IACV off a 99-00 CTR is identical with one from a 99-00 Civic Si? Or can it be substituted with an Si iacv without giving off any codes?

Steven.

I believe they are the same, even identical to D-series

nightrider93ex

Thanks Steven for your reply but i'm looking for accurate information.

nightrider93ex

I doubled backed and found that the jumper harness I purchased had not "taken care" of the IACV conversion. Performed the switch-over and the idling very much improved but not 100% satisfied with it. It did however get rid of the CEL.

Now I have a new issue. The motor will not revolve beyond 3000-3500 rpm after full warm up. I've read this to be a "safe/limp mode".
Is this because of the previous code 14 that must be reset? Anyone experience this before and found solution?

A definete issue I have yet to correct is a vacuum leak in which the brass nipple was broken off during shipping. It is the one circled on the picture provided and I don't know what to do with it or where it goes or even if its connected to this safe/limp mode experiance.


* IM belongs to an OBD1 Honda.

Picture includes a Purge Solenoid connected to this vacuum line, do B16B engines come equipped with these in stock trim?