Can someone tell me exactly which wire the O2 information readings travel through and into the ECM? Some might recall my 02 post, I think it would be best to tie into that wire right at the back fo the ECM, that way your making sure the wire is not grounded/open somewhere. Also I wanted to do this to see what my 02 reading are at WOT this weekend. Just to compare them to what Corky's getting on his.

Pictures would be great, or a wiring diagram illustrating the wires on the back of the ECM...

Thanks Guys....OK the clock is tickin...last time you guys had off the wall information to me in record time! Who's going to win the trip to hawaii? :jester :D

 

Jesse, mine was a purple wire. The pins on my 85 ecm are different than yours, so giving you pin position wont help.

 

I could look it up when I get home from work. I know the wire at the O2 sensor itself is a gray/purplish color.

 

Scorp, Yeah if you can...that would be great. Thanks also Ralph, but as you said your is a different configuration and maybe a different color.

:cheers:

 

Helms shows O2 as PPL to ECM 412 (ecm plug # 12045575)- D7 out (Blk/Lt Blue) to 925 (auto) 905 (man) of IP Harness

 

Guys, Thanks for all the help. I did a quick search on the net and this confirms vinnies87 information:

======================================== ======================================
Repinning table sorted by '165 order
======================================== ======================================


'165 Harness '730 ECM
------------------------------------- --------------------------------------
A1 (Fuel Pump Relay) BA11
A2 (AIR Valve - Port) GF2
A3 (Evap. Canister Purge) GF7
A4 (EGR Cntl) GE9
A5 (SES lamp) GE7
A6 (IGN +12v) BA6
A7 (TCC solenoid/A4) GF6 (Automatic Trans)
(Shift light/M5) GF1 (Manual Trans)
A8 (ALDL Serial Diag) BA8
A9 (ALDL Diag Term) GE12
A10 (VSS {buffered}) BC6 (requires PROM change: Mag VSS
at 0x18 b6 for $8D PROMS)
A11 (MAF Analog GND) N/C
A12 (Sys. GND) BA12

B1 (BATT +12V) BB1
B2 (Fuel Pump Signal) GE13
B3 (EST Ref Low) BD9
B4 N/C
B5 (Distributor Ref.) BD8
B6 (VATS) GF10
B7 (ESC Signal) GF9 (req new, direct fed knock sensor
or ESC jumper and resistor)
B8 (A/C Signal) BC9
B9 N/C
B10 (Park/Neutral Sw Signal) BD16
B11 N/C
B12 (MAF Signal) N/C

C1 (Fan Ctrl) GE8
C2 (AIR Valve - Converter) GF4
C3 (IAC "B" Low) GE6
C4 (IAC "B" Hi) GE5
C5 (IAC "A" Hi) GE3
C6 (IAC "A" Low) GE4
C7 N/C
C8 (4th gear switch) BD14
C9 N/C
C10 (CTS Signal) GE16
C11 N/C
C12 (MAT Signal) GF16
C13 (TPS Signal) GF13
C14 (TPS +5v ref.) BA5
C15 (EGR Diag) N/C
C16 (Battery) BC16

D1 (Sys GND) BD1
D2 (TPS,CTS,MAT GND) BB5
D3 (Sys GND) BD6
D4 (EST Ctrl) BC8
D5 (EST Bypass) BC7
D6 (O2 GND) GE15
D7 (O2 Signal) GE14
D8 N/C
D9 N/C
D10 (Sys GND) BD7
D11 (A/C Pressure Sw.) BD12
D12 (MAF Burn off) N/C
D13 N/C
D14 N/C
D15 (Injectors 1,3,5,7) BC11
D16 (Injectors 2,4,6,8) BC12

-----------------------------
:thumbs:

Note the first designated position is for the 165 ECM, the second looks like the 730 ECM...


[Modified by ski_dwn_it, 11:38 AM 10/29/2003]

 

hmmm.... This ^ looks like information i should save to my computer somewhere.