I just bought a 89 crx dx and im getting code 14 which is idle air control valve. I check the wiring and the blk/yellow wire is not getting power, does anyone know where it gets power from?

 

no one has ever ran into this problem?

 

why would your wiring affect the iacv? its located on the intake manifold. either adjust it, clean it, or replace it

 

the iacv needs power to open the valve inside since it has no power the valve does not open and its causing the motor not to run right acting like it has a rev limiter ant 3k rpm. i already added power straight to it and it solved the problem but i want to know where the power is supposed to come from before i run into a short in the wirring

 

get a service manual that will give you all the wiring diagrams you need if i had time i would dig it up

 

That's where I'm lost i don't know how to read those diagrams

 

According to the image below the IACV is pin 11 on connector 'A'.
Check the color of the other wires on that connector to make sure you find the correct wire for the IACV.

I suggest you check the firewall connector and make sure it's all secure.
Also check the pins inside the IACV connector and the wires feeding into the connector to make sure they are looking good and aren't bent, broken, or corroding.
Next, unplug the IACV connector as well as the ECU 'A' connector and do a continuity test from pin 11 to the IACV connector.
If you dohave continuity then you either have a bad connection at the sensor, bad connection at the ECU, or a flat out bad ECU that isn't sending out a signal to the IACV.

If you don't have continuity, then you can locate the wire on the firewall plug and do some more continuity testing to figure out where your break is and replace the wire.
You could also tap into or cut the wires and run a complete new one from ECU to sensor (this won't be very pretty).

 

i know that a11 is sending the signal from the aicv but where does the power come from?

 

here ya go,
The blue/yellow wire should have 12v on it. Trace it back to the eacv until you find the open. The ecu supplies the ground.