GM IAC PROBLEMS UPDATED
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GM IAC PROBLEMS UPDATED
Spec's in Sig.
1.9l twincam NA mota.
All stock saturn ( GM ) sensors/valve.
The v3 pcb is jumpered for IAC use according to the assembly guide.
First Question!
On the Relayboard, is this correct?
S1 = 1A ("A" = "+" positive)
S2 = 1B ("B" = "-" negative)
S3 = 2A ( " " " " )
S4 = 2B ( " " " " )
more less do the A and B signify Pos, Neg....?
ok moving on
My IAC valve...
O-ringed type
Infinate resistance between the Middle 2 pins...
The day I got my relayboard/wireharness/MS2blah blah blah....
I put everything(MS2/harness/RB/GMIAC"in a TB"/CLT/MAT) on my desk, connected everything... Hooked up my Lamda power supply... Bench tested my IAC... Always on And No Heat...
for the IAC valve I have the Saturn Wireing Scematix... (lookn now as i type, to copy correctly)
IAC A HI --------- Light blue wire / White trace
IAC A LOW ------- Light blue wire / Black trace
IAC B HI --------- Light green wire / White trace
IAC B LOW ------- Light green wire / Black trace
With that Blue would be coil 1 , green would be coil 2
I wired
A HI ---- S1
A LOW -- S2
B HI ---- S3
B LOW -- S4
Tired..
I have contacted a friend that is going to come over and turn the key for me.
I will be using a spare throttle body and SAME model IACV "but different unit", to phically watch IACV movement.
While doing so I will note Step Time and test to see how small I can to with out missing steps. When I have proper "Visual" function of the valve.
And
Set the Start Step more accuratly...
1.9l twincam NA mota.
All stock saturn ( GM ) sensors/valve.
The v3 pcb is jumpered for IAC use according to the assembly guide.
First Question!
On the Relayboard, is this correct?
S1 = 1A ("A" = "+" positive)
S2 = 1B ("B" = "-" negative)
S3 = 2A ( " " " " )
S4 = 2B ( " " " " )
more less do the A and B signify Pos, Neg....?
ok moving on
My IAC valve...
O-ringed type
Infinate resistance between the Middle 2 pins...
The day I got my relayboard/wireharness/MS2blah blah blah....
I put everything(MS2/harness/RB/GMIAC"in a TB"/CLT/MAT) on my desk, connected everything... Hooked up my Lamda power supply... Bench tested my IAC... Always on And No Heat...
for the IAC valve I have the Saturn Wireing Scematix... (lookn now as i type, to copy correctly)
IAC A HI --------- Light blue wire / White trace
IAC A LOW ------- Light blue wire / Black trace
IAC B HI --------- Light green wire / White trace
IAC B LOW ------- Light green wire / Black trace
With that Blue would be coil 1 , green would be coil 2
I wired
A HI ---- S1
A LOW -- S2
B HI ---- S3
B LOW -- S4
Tired..
I have contacted a friend that is going to come over and turn the key for me.
I will be using a spare throttle body and SAME model IACV "but different unit", to phically watch IACV movement.
While doing so I will note Step Time and test to see how small I can to with out missing steps. When I have proper "Visual" function of the valve.
And
Set the Start Step more accuratly...
Last edited by Lordprimate on Sat Feb 11, 2006 11:23 pm, edited 9 times in total.
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
-
- Helpful MS/Extra'er
- Posts: 85
- Joined: Tue May 17, 2005 11:43 am
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
-
- Helpful MS/Extra'er
- Posts: 85
- Joined: Tue May 17, 2005 11:43 am
Yes, try the reflash.
The same thing almost happened to me.
What fixed it was switching the polarity of the wires for the IAC motor for both sides.
but I am still hunting for that magic number for consistent operation. I think the newer embedded code releases should solve some of the inconsistent problems.
keep us posted.
The same thing almost happened to me.
What fixed it was switching the polarity of the wires for the IAC motor for both sides.
but I am still hunting for that magic number for consistent operation. I think the newer embedded code releases should solve some of the inconsistent problems.
keep us posted.
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
-
- Helpful MS/Extra'er
- Posts: 85
- Joined: Tue May 17, 2005 11:43 am
-
- Helpful MS/Extra'er
- Posts: 85
- Joined: Tue May 17, 2005 11:43 am
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
..............
Last edited by Lordprimate on Sat Feb 11, 2006 10:01 pm, edited 2 times in total.
MS-II Blue V3 PCB
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
............
Last edited by Lordprimate on Sat Feb 11, 2006 10:46 pm, edited 1 time in total.
MS-II Blue V3 PCB
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154
-
- Experienced MS/Extra'er
- Posts: 152
- Joined: Mon Oct 03, 2005 7:58 pm
- Location: Richmond, VA
- Contact:
..........
Last edited by Lordprimate on Sat Feb 11, 2006 10:01 pm, edited 2 times in total.
MS-II Blue V3 PCB
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154
MT 2.25 Final Release w/ MS2/Extra 2.0.1 Firmware
In a 1.9L 93 Saturn SC2 w/ GM DIS.....
http://www.cardomain.com/ride/741154