Disable C.A.R.S -skip shift in Y body 8D

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Oct 4, 2006 | 04:57 AM

SABLT194

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From: GARDNERS PA

Disable C.A.R.S -skip shift in Y body 8D

I've searched the boards, TC and Tunerpro for info relating to disabling CARS or CAGS on a 90 Y body 727 8D. Any info out there???

Thanks

Oct 4, 2006 | 06:59 AM

RBob

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From: Chasing Electrons

Car: check

Engine: check

Transmission: check

Here are the parameters for a '91:

Code:

;------------------------------
; Computer Aided Ratio Selection
; MANUAL XMISSION
;------------------------------

L8300:  FCB     120     ; IF COOL GT 50c CK FOR CARS ACTIVE
                        ;
L8301:  FCB      1      ; RESET SPEED
L8302:  FCB     12      ; ENABLE SPEED
L8303:  FCB     19      ; DISABLE SPEED
                        ;
L8304:  FCB      48     ; RPM DISABLE
L8305:  FCB      90     ; %TPS FOR DISABLE
                        ;
L8306:  FCB      76     ; Kpa LOW BARO DISABLE
L8307:  FCB      78     ; Kpa LOW BARO FOR RE ENABLE

IIRC once over a certain throttle position CARS is not invoked. With that I would set the %TPS FOR DISABLE at $305 to 0. Should do it.

If not, then change the coolant (@ $300) to 255, or change both.

RBob.