GM IAC PROBLEMS UPDATED

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GM IAC PROBLEMS UPDATED

Postby Lordprimate » Fri Dec 09, 2005 6:57 pm

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...
Last edited by Lordprimate on Sat Feb 11, 2006 11:23 pm, edited 9 times in total.
Lordprimate
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Postby Lordprimate » Sat Dec 10, 2005 3:34 pm

.......
Last edited by Lordprimate on Sat Feb 11, 2006 10:04 pm, edited 2 times in total.
Lordprimate
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Postby Lordprimate » Sat Dec 10, 2005 8:51 pm

.........
Last edited by Lordprimate on Sat Feb 11, 2006 10:04 pm, edited 1 time in total.
Lordprimate
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Postby Lordprimate » Tue Dec 20, 2005 10:36 am

.............
Last edited by Lordprimate on Sat Feb 11, 2006 10:03 pm, edited 1 time in total.
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Postby eightvalver » Tue Dec 20, 2005 6:16 pm

Lance, that was some really really good information and explanation about what the settings do that I can use.
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Postby Lordprimate » Mon Dec 26, 2005 9:17 pm

.........
Last edited by Lordprimate on Sat Feb 11, 2006 10:03 pm, edited 1 time in total.
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Postby eightvalver » Tue Dec 27, 2005 9:37 pm

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.
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Postby Lordprimate » Fri Dec 30, 2005 8:04 pm

........
Last edited by Lordprimate on Sat Feb 11, 2006 10:02 pm, edited 1 time in total.
Lordprimate
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Postby eightvalver » Fri Dec 30, 2005 8:36 pm

switch the polarity of the wires for the IAC motor for both sides.
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Postby eightvalver » Fri Dec 30, 2005 11:26 pm

try different start values
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Postby Lordprimate » Thu Jan 05, 2006 12:25 pm

..............
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
Lordprimate
Experienced MS/Extra'er
 
Posts: 152
Joined: Mon Oct 03, 2005 7:58 pm
Location: Richmond, VA

Postby Lordprimate » Thu Feb 09, 2006 3:46 pm

............
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
Lordprimate
Experienced MS/Extra'er
 
Posts: 152
Joined: Mon Oct 03, 2005 7:58 pm
Location: Richmond, VA

Postby Lordprimate » Sat Feb 11, 2006 7:28 pm

..........
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
Lordprimate
Experienced MS/Extra'er
 
Posts: 152
Joined: Mon Oct 03, 2005 7:58 pm
Location: Richmond, VA


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