I have an 88 Integra with an EACV. I would like to be able to switch it on and off from the interior to resolve an intermittent surge problem. My goal is to provide a seamless transition from ON after the car has warmed to normal operating temperature to OFF so that the EACV cannot be activated by the ECU or throw a code.
A friend of mine just used a plain on/off switch in the circuit and took out the bulb in the dash so it would not bother him. It is just an autoX car and not a daily driver. I wish to keep the dash light functional. The simple option is to connect a spare EACV to the ECU connector and use an on/off switch to the unit on the IM. That way the ECU is always satisfied but you have an extra piece of junk in the engine bay.
I did a search here and only found a few threads that were of any help. My concept is basically the same as promoted here but I wish to have help with my wiring ideas as I am not an electronic guru! So far I have used a 13 ohm resistor across the removed 2 pin connector from the EACV in order to ascertain if a code would be thrown. NO code but the resistor became very hot as expected. I was given a few sample resistors from a tech at work.
I have read here that I should perhaps use a 10W 10 ohm resistor from Radio Shack. The manual states that the EACV should be between 8-15 ohms to be serviceable. It also states that the ECU controls the current to the EACV.
Here are three diagrams to show my ideas. I need feedback as to whether I am on the right track.
Diagram one is just the resistor in the circuit to see if a code is thrown. It not throw a code but resistor got very hot.
Diagram two shows a possible switching circuit that would bypass the EACV when open and when closed run the EACV and the resistor should be bypassed. Am I correct in this logic or does the resistor still stay in play?
Diagram three is another version of two but uses a very high value resistor to basically cut the current off to the EACV when the switch is open. Again, when switch is closed the resistor is bypassed and the EACV operates normally.
Is there a resistor that I could use with a heat sink to keep cool so that I don't burn up some wiring? JS