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BIN changes when adding A/C??

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Old Jul 29, 2005 | 11:22 PM
  #1  
silvernblack's Avatar
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Engine: RamJet 350 running EZ-EFI 2.0
Transmission: Richmond 6-speed
Axle/Gears: 4.1
BIN changes when adding A/C??

Anything special to do to a BIN on a 730 ECM after adding air-conditioning?
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Old Jul 30, 2005 | 09:05 AM
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
I only see two things that could be tweaked if needed.
In AUJP (check location if other bin)
862A = IAC Steps added in Park (if warm) Default is 20 steps
8630 = RPM added if A/C on, default is 1 (each 1 = 12.5 RPM)

There are quite a few parameters IF the clutch is being "controlled" but I don't see any control, just sensing that the clutch is on or off.
Code:
;--------------------------------------------------
; A/C clutch params
;--------------------------------------------------
;
L837F:        .byte   0xFF      ;=255,  99.6 %TPS DISABLE THRESH               ; DRef: 0xD411
L8380:        .byte   0xFF      ;=255,  COOLANT DISABLE THRESH (218=124c)      ; DRef: 0xD41E
L8381:        .byte   0xFF      ;=255,  151c OIL DISABLE THRESH                ; DRef: 0xD42B
L8382:        .byte   0x00      ; 0 DEG C   OIL Temp HYST                      ; DRef: 0xD432
L8383:        .byte   0xFF      ; DISABLE AC IF MPH > 255                      ; DRef: 0xD43C
L8384:        .byte   0x00,0xB4 ; DISABLE IF HI MPH AFTER 18.0 SEC             ; DRef: 0xD44A
L8386:        .byte   0x1E      ; HI MPH 30 SEC BEFORE RE-ENABLE               ; DRef: 0xD45A
L8387:        .byte   0xC8      ; IF RPM > 5000 DO NOT ENAGE A/C               ; DRef: 0xD47E
;
;------------------------------------------------
; A/C IAC LEARING GAIN PARAM'S
;------------------------------------------------
L8388:        .byte   0x14     ; 20 STEPS DEFAULT IF Non Vol MEM FAIL         ; DRef: 0xBDCC,0xC170
L8389:        .byte   0x20     ; 32 STEPS MAX A/C LEARN                       ; DRef: 0xD4D3,0xC166
L838A:        .byte   0x0A     ; 10 STEPS MIN A/C LEARN                       ; DRef: 0xD4DA,0xC16B
L838B:        .byte   0x05     ; 5 STEPS MAX+ A/C LEARN EACH ON/OFF CYCLE     ; DRef: 0xD4E6,0xD4EB
L838C:        .byte   0x28     ; 0.04 Sec MIN RPM ERR TIME LEARN EN/DISABLE   ; DRef: 0xD4AB,0xC359
L838D:        .byte   0x80     ; MULT PK/NEUT GAIN FOR LEARN                  ; DRef: 0xD4CE
;------------------------------------------------
The clutch might actually be controlled in other bins, I'm not sure.
There are control bits to set the "being controlled" condition and then the on/off bits.
That's all I know of it.
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Old Jul 30, 2005 | 09:14 AM
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JP86SS's Avatar
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Almost forgot :)

You do have to add the wire to "C9" from the A/C clutch to make the ECM work with the A/C.
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Old Jul 31, 2005 | 08:47 AM
  #4  
silvernblack's Avatar
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Engine: RamJet 350 running EZ-EFI 2.0
Transmission: Richmond 6-speed
Axle/Gears: 4.1
thanks....

I ran the lead to C9; everything else seems to function ok....I guess I'll leave it alone.
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