Need to know which wire is which on ISC ASAP

Angry7M

Formerly redmaro
Sep 6, 2007
733
0
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36
AZ
I have this problem where the rpms go up and down on idle. And I found out that some of the wires to the Idle speed control valve connector are not hooked up, and now I dont know which wire goes where. So I need to know which wire goes where(color wire) on the ISC plug connector. Thanks
 

Angry7M

Formerly redmaro
Sep 6, 2007
733
0
0
36
AZ
I just need a pic of the Idle Speed Control Valve connector. The one clip that connects to the ISC. Its located towards the front of the engine on the intake manifold, its real easy to see.

If anyone could help it be great. Thanks :nono:
 

figgie

Supramania Contributor
Mar 30, 2005
5,225
16
38
50
Twin Cities, Minnesot-ah
dude.

I am going to tell you this. You wil need the TSRM. I know how the ISC works but never actually paid attention to the stock wiring color for the ISC.

But in essence you have 6 pins.

The two middle pins (B1 & B2) go to positive. S1, S2, S3 and S4 pull to ground via the TCCS.

With that said, looking at the TSRM (89-92).

The following colors are assigned to each pin

W-Y (White/Yellow Stripe) S1
G-W (Green/White Stripe) S2
L-R (Blue/Red Stripe) S3
R-B (Red/Black Stripe) S4

B-R (Black/Red Stripe) B1 & B2

Hope that helps!
 

Angry7M

Formerly redmaro
Sep 6, 2007
733
0
0
36
AZ
That definitely helps, now I can get started on the wiring. Thanks you very much.