High idle issue on VN 355 and IAC pinout

[VoodooVn]

Hi guys, I have 355 stroker with a dual plane edelbrock manifold and a 4 barrel throttle body. The throttle body has instructions on how to wire 4 pin plug for the IAC motor. I need to know what “B hi, B Low, A hi and A low” are coming from the ecu and the wire colour... Does anyone have information on what each iac wire does with respect to the above on a VN V8 manual ECU??? I have had a high idle issue that I haven’t been able to work out for a while now. Cheers in advance.

 

[Vin999]

iac sensor wires go to pins 3 to 6 for vn v8 ecu.... vn to vs v8 wire colour and pin on ecu are the same from memory
3 = green/black
4 = green/white
5 = blue
6 = blue/black

 

[Immortality]

Does the Edelbrock throttle body not use a GM style stepper motor? If so, the factory loom should plug straight in. Alternately you should be able to fit the original stepper motor from your throttlebody which will plug straight in.

Moved thread to the appropriate technical sub section.

 

[Vin999]

Hi guys, I have 355 stroker with a dual plane edelbrock manifold and a 4 barrel throttle body. The throttle body has instructions on how to wire 4 pin plug for the IAC motor. I need to know what “B hi, B Low, A hi and A low” are coming from the ecu and the wire colour... Does anyone have information on what each iac wire does with respect to the above on a VN V8 manual ECU??? I have had a high idle issue that I haven’t been able to work out for a while now. Cheers in advance.

adding to my previous post in pin plug position
C4 = B hi
C3 = B low
C5 = A hi
C6 = A low

 

[VoodooVn]

iac sensor wires go to pins 3 to 6 for vn v8 ecu.... vn to vs v8 wire colour and pin on ecu are the same from memory
3 = green/black
4 = green/white
5 = blue
6 = blue/black

iac sensor wires go to pins 3 to 6 for vn v8 ecu.... vn to vs v8 wire colour and pin on ecu are the same from memory
3 = green/black
4 = green/white
5 = blue
6 = blue/black

 

[VoodooVn]

Does the Edelbrock throttle body not use a GM style stepper motor? If so, the factory loom should plug straight in. Alternately you should be able to fit the original stepper motor from your throttlebody which will plug straight in.

Moved thread to the appropriate technical sub section.

Thanks for that and Yes it is a GM stepper motor . I just want to confirm which wires are A high, A low and B high, B low so I can confirm the iac is wired as per the edelbrock instructions.

 

[Immortality]

Do you have the ability to datalog?

 

[VoodooVn]

This is

adding to my previous post in pin plug position
C4 = B hi
C3 = B low
C5 = A hi
C6 = A low

awesome mate that’s exactly what I am after . I will confirm it all tomorrow and then take it from there. Hopefully my IAC will do what it’s supposed to do. Thank you fellas

 

[VoodooVn]

Do you have the ability to datalog?

No I don’t mate

 

[Immortality]

Have you tried this https://forums.justcommodores.com.au/threads/reseting-vn-vp-ecu.111607/ ?