Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

Is the IAC sensor suppose to spin? urgent

thumpstar68

New Member
Joined
Jul 24, 2013
Messages
15
Reaction score
0
Points
0
Age
28
Location
brisbane
Members Ride
vx commodore
I just took out my IAC, how is it suppose to operate properly? Is it suppose to pull in & out, or spin completely? Or just the little washer part in the middle does the movement? Would like to know before bursons close :D thanks for any answers
 

delcowizzid

on holiday
Joined
Jul 8, 2008
Messages
6,993
Reaction score
441
Points
83
Location
NZ
Members Ride
в∞ѕтεכ √&
it doesnt spin just goes in and out .you shouldnt really push it in and out though LOL
 

thumpstar68

New Member
Joined
Jul 24, 2013
Messages
15
Reaction score
0
Points
0
Age
28
Location
brisbane
Members Ride
vx commodore
well I tried and it doesn't seem to budge, is this a problem?
 

ephect

Donating Member
Joined
Jul 27, 2006
Messages
5,132
Reaction score
7,215
Points
113
Location
Melbourne
Members Ride
VS Acclaim V6
Its a stepper motor, needs power to move, it shouldn't spin by hand

When U turn the ignition on U should hear it move and set itself.
 

thumpstar68

New Member
Joined
Jul 24, 2013
Messages
15
Reaction score
0
Points
0
Age
28
Location
brisbane
Members Ride
vx commodore
How do you tell if it's faulty? It was really gunky, i cleaned it up with some degreaser
 

Cheap6

New Member
Joined
Jun 19, 2005
Messages
2,498
Reaction score
73
Points
0
Members Ride
VP Exec
One way is to create a vacuum leak (remove a vacuum hose) and observe the idle speed correction. You can also try blocking then unblocking the IAC valve port to the same end.

If you have cleaned the gears you should relubricate them with some light grease.
 

Nut Kracker

Donating Member
Joined
Oct 18, 2012
Messages
4,760
Reaction score
135
Points
63
Age
61
Location
Echuca Vic.
Members Ride
VT SS 304ci (195i)
Other ways to test it are......
Turn the steering wheel on full lock. The IAC should increase the idle from the extra load on the engine from the power steering pump.
Or, turn on the A/C (and fan) and the idle should also adjust to compensate for the extra load from the compressor.

Or.....
 

Pollushon

Boost gives me a bar....
Joined
Nov 9, 2012
Messages
2,871
Reaction score
1,263
Points
113
Location
Canberra
Members Ride
VY SS
It can spin, if you've ever pulled one apart you'll find outer is threaded onto the stepper spine, this isn't good though. About 2 weeks before my VP's IACV shat itself in the TB, I noticed it was spinning and therefore unscrewing. When it went, I had to use tweezers to get the tip and shaft out.
 

Nut Kracker

Donating Member
Joined
Oct 18, 2012
Messages
4,760
Reaction score
135
Points
63
Age
61
Location
Echuca Vic.
Members Ride
VT SS 304ci (195i)
When mine shat it's self, the shaft shot out of the body like a bullet,:gun2: instead of a slow gentle step.
 

Danielzke

Member
Joined
Feb 6, 2012
Messages
140
Reaction score
1
Points
16
Age
26
Location
Sydney
Members Ride
Commy
^ Mine broke like that too lol

Pretty cheap and easy to replace mate. Someone told me when you put a new one in you need to adjust it, like letting it idle in park for 10 minutes, then 10 minutes with the air cond on, then 10 minutes in drive, then 10 minutes in drive with air cond off, then turn it off for 30 seconds, then turn it back on
 
Top