[Howard]

I am converting my SVO T/B to a Super Coupe T/B. I clipped the connectors for the TPS and the IAC  when I was at Pick-N-Pull

The TPS seems to be straightforward, as the colors are the same.... Orange...Green...Black, which match the SVO harness

The IAC wires, however, don't match.
The S-C T/B has a Red wire and a Red/green stripe....the SVO Harness is Red/blue slash and Grey/white. How do they match up?

Thanks, Howard

[TurboRay]

The S-C T/B has a Red wire and a Red/green stripe....the SVO Harness is Red/blue slash and Grey/white. How do they match up?

From the reading I did after Googling "Ford idle air control test"......one leg apparently gets a constant 10.5-12.5V from the ECU, while the other leg is PWM'd to ground, thereby sequentially opening & closing the valve to a position that achieves the target idle speed. I wuz wrong once b4, BUT.......I doubt that you can burn up the valve OR the ECU by accidentally reversing the polarity, Soooo......if it were me, I'd probably try it both ways to find out which polarity works best (it may not make any difference, lol), but DUNNO! Shannon.....Wes?  <shrug>

[Howard]

The S-C T/B has a Red wire and a Red/green stripe....the SVO Harness is Red/blue slash and Grey/white. How do they match up?

From the reading I did after Googling "Ford idle air control test"......one leg apparently gets a constant 10.5-12.5V from the ECU, while the other leg is PWM'd to ground, thereby sequentially opening & closing the valve to a position that achieves the target idle speed. I wuz wrong once b4, BUT.......I doubt that you can burn up the valve OR the ECU by accidentally reversing the polarity, Soooo......if it were me, I'd probably try it both ways to find out which polarity works best (it may not make any difference, lol), but DUNNO!  Shannon.....Wes?  <shrug>

Yeah, that is what I figured, Ray....one way would open it, the other close. The connector does have an alignment slot, which indicates to me it does matter.
Since I am soldering it in, I would like to get it right the first time!

[Howard]

Shannon straightened me out.
Red w/Green stripe seems to be a common color for signal return/sensor ground.
The knowledge people share in this group and on Shannon's site is truly a blessing.

[TurboRay]

Shannon straightened me out.
Red w/Green stripe seems to be a common color for signal return/sensor ground.

Sooooo........the red/green wire on the S/C TB attaches to the SVO wire w/o key-on power? If so, you probably have it hooked up by now. How does it run? Any difference in butt-dyno power or responsiveness? <shrug>

[Howard]

Shannon straightened me out.
Red w/Green stripe seems to be a common color for signal return/sensor ground.

Sooooo........the red/green wire on the S/C TB attaches to the SVO wire w/o key-on power? If so, you probably have it hooked up by now. How does it run? Any difference in butt-dyno power or responsiveness?  <shrug>

I connected TB Red-to-Harness Red(12v)....and TB Red w/Green to Harness Grey w/White(signal ground).
I am still finishing the engine install. It was a lot of work changing to the S/C TB...I TiG welded an adapter plate to the intake...then had to make the cable mount...then change the throttle cable shaft to work with the 2004R TV cable.
I am waiting on a new TV cable, as the change in mounting exposed the clamp-kink on the inner wire, which won't let it work properly.
When THAT shows up, I can verify the throttle geometry( if I get it wrong, it will trash the trans), reinstall the trans pan, install the exhaust/PiMP, and fire up the new engine!

THEN..it is time to make a run to Placerville!

[TurboRay]

When (the trans TV cable) shows up, I can verify the throttle geometry, reinstall the trans pan, install the exhaust/PiMP, and fire up the new engine!

THEN..it is time to make a run to Placerville!

New engine? I'm sure you've discussed this, Howard ~ BUT.......I'm old and forgetful, lol. Anyway, I'll be here and looking forward to seeing you and Michelle(sp?) again.  <thumbup>

[Howard]

Yeah...I had 3 head gaskets( 2-1035s and 1- 8993) all blow at the same bolt hole...with a new Bo-Port head. That indicated the original block surface was causing the problem. My machinist said it was a 4 thou higher in the back, and a 3 thou dip at the #2 cylinder!
SOO.... I sonic tested the block, and did a full boogie build. Scat rods-CP pistons, Head and Main studs and upgraded to a 2.1 cam... and  yes I did have the head surfaced again.

I don't know if Michele can get a break from her Ranger job in Yosemite Nat'l Park to make a trip, but I will certainly try to come up in June-July to visit!

[TurboRay]

I sonic tested the block, and did a full boogie build. Scat rods, CP pistons, Head and Main studs, and upgraded to a 2.1 cam....and  yes I did have the head surfaced again.

WOW ~ stimulus money? Oh, wait.......I forgot that youse guys are rich, lol.  <stickpoke>