When disconnecting IAC Motor, idle doesnt change

[savegoodautonfg]

When i disconnect the IAC motor connector when the engine is running the idle doesnt change at all. As far as i know it is suppose to. anyone have this problems before and have any input.

Jritcher's write up on idle checklist is very helpful also just seeing other's input.

 

[AnthonyR23]

honestly try cleaning it really well... then put it back on and if it still doesn't change when it is unplugged.. then you need to replace it..

 

[AnthonyR23]

same happened to me.. but after really cleaning it and making sure my tps was set correctly it started to change... so I am assuming it is fixed!!

 

[HISSIN50]

It all depends upon how the idle is set. As an E.g., I set mine to have zero duty cycle and idle just above the commanded hot idle. If I unplug my IAC on a hot, unloaded motor, there's no change.

However, if you disconnect the IAC while the engine is cold or with a load like A/C on and the idle doesnt decrease, that would raise a red flag.

Good luck.

 

[savegoodautonfg]

my tps is set at 1.15

is that really bad or what?

the IAC red wire does get 12 volts

 

[AnthonyR23]

I have read on some threads to shoot for between .6 and 1.16 but for some reason others have said .6 to .9 .. So I am pretty sure 1.15 is pretty good.. someone go ahead and correct me if I'm wrong.

 

[HISSIN50]

1.16 should be fine. If it's not, you will get a TPS code. Mine's at 1.19 and it seems to do just fine.

Good luck.