Hi

Are there any body that has been able to make the shift light come on at a specific RPM without any delay in $8D ANHT?
In that case how?

Thanks
Gunnar

 

i have an msd light that uses the pills for whatever rpm you want

 

First let me say that I'm not 100% positive about this but here goes anyway....
The shift light is not solely controlled by ECM paramatersthat can be set to make it useful as a shift light..
It is controlled by the ECM processing of several parameters including the VSS,TACH signal and TPS signal AND the 4th gear pressure switch in the transmission..

I do not believe it can be reprogrammed to be used as a 'real time' shift light.

From the FSM:

-------------------------------------------------------------------
The automatic transmission upshift light will be enabled while cruising down the highway and ALL of the following conditions are met for 30 seconds.
- Cooling temperature above 50* C (122F)
- Vehicle Speed greater than 47 mph
- TPS greater than 0%
- Engine epeed above 1400 RPM

The upshift light will be turned "ON" if the engine speed exceeds 5200 rpm in ANY gear other than 4th gear. The ECM computes what gear the vehicle is in by monitoring engine rpm and vehicle speed. When the ECM determines a higher gear can be selected, it will provide a ground which controls the "upshift" light.
-------------------------------------------------------------------
Hope this helps in understanding the 'upshift' light.

 

Thanks for the reply. I think i'm on my way to solve the problem.
I first asked the questin becaus i did not want to reinvent the wheel.
yes i'm lazy
So far i been abel to lessen the delay and make it start from 2 MPH
so that it vill work in 1 & 2 gear.
The problem was that the ANTH hack had som errors. se below:
Orginal ANTH whit ERROR:
LIGHT PARAMETERS
;
;--------------------------------------------------
L8357: FCB 47 ; __ DEG C THERSH FOR ENG LAMP ENABLE
L8358: FCB 0 ; 0 MPH THERSH FOR ENG LAMP ENABLE
L8359: FCB 0 ; 0% TPS THERSH FOR ENG LAMP ON
L835A: FCB 56 ; 1400 RPM THERSH FOR ENG LAMP ON
L835B: FCB 208 ; 5200 RPM THERSH FOR ENG LAMP ON
;--------------------------------
; LIGHT ON TABLE
; TBL = % FULL LD * 2.56
;--------------------------------
; % LD RPM
;----------------
L835D: FCB 13 ; 5% 800
FCB 46 ; 18 1600
FCB 118 ; 46 2400
FCB 192 ; 75 3200
FCB 192 ; 75 4000
FCB 255 ; 100 4800
FCB 255 ; 100 5600
;---------------------------------
L8364: FCB 52 ; 1300 RPM, THRESHOLD FOR ENG LIGHT ON
L8365: FCB 204 ; 5100 RPM, THRESHOLD FORCE ENG LIGHT ON
;-----------------------------------
; LIGHT OFF TABLE
; TBL = % FULL LD * 2.56
;-----------------------------------
; % LD RPM
;---------------
L8366: FCB 18 ; 7% 800
FCB 51 ; 20 1600
FCB 123 ; 48 2400
FCB 197 ; 77 3200
FCB 197 ; 77 4000
FCB 255 ; 100 4800
FCB 255 ; 100 5600
;--------------------------------
;--------------------------------
; LIGHT ON DELAY MODIFER
; TABLE
; DELAY vs %TPS
;
; TABLE = (SEC*10)/L836D
;--------------------------------
L836D: FCB 2 ; SCALER
; DELAY TPS
;----------------
L836E: FCB 150 ; 30 0.0 %
FCB 150 ; 30 12.5
FCB 150 ; 30 25.0
FCB 150 ; 30 37.5
FCB 150 ; 30 50.0
;---------------------------------
**************************************** ***********
* XMISSION PARAMS

What I think is the right ANTH hac:


;--------------------------------------------------
; SHIFT LIGHT PARAMETERS
;
;--------------------------------------------------

L8357: FCB 120 ; 50 DEG C THERSH FOR SHIFT LAMP ENABLE
L8358: FCB 47 ; 47 MPH THERSH FOR SHIFT LAMP ENABLE
L8359: FCB 0 ; 0% TPS THERSH FOR SHIFT LAMP ENABLE
L835A: FCB 0 ; 0% MAP THERSH FOR SHIFT LAMP ENABLE
L835B: FCB 56 ; 1400 RPM THERSH FOR SHIFT LAMP ENABLE
L835C: FCB 208 ; 5200 RPM FOR SHIFT LAMP ON
;--------------------------------
; LIGHT ON TABLE
; TBL = % FULL LD * 2.56
;--------------------------------
; % LD RPM
;----------------

L835D: FCB 13 ; 5% 800
L835E: FCB 46 ; 18 1600
L835F: FCB 118 ; 46 2400
L8360: FCB 192 ; 75 3200
L8361: FCB 192 ; 75 4000
L8362: FCB 255 ; 100 4800
L8363: FCB 255 ; 100 5600

;---------------------------------
L8364: FCB 52 ; 1300 RPM, THRESHOLD FOR SHIFT LAMP DISABLE
L8365: FCB 204 ; 5100 RPM FOR SHIFT LAMP OFF
;-----------------------------------
; LIGHT OFF TABLE
; TBL = % FULL LD * 2.56
;-----------------------------------
; % LD RPM
;---------------
L8366: FCB 18 ; 7% 800
L8367: FCB 51 ; 20 1600
L8368: FCB 123 ; 48 2400
L8369: FCB 197 ; 77 3200
L836A: FCB 197 ; 77 4000
L836B: FCB 255 ; 100 4800
L836C: FCB 255 ; 100 5600
;--------------------------------
;--------------------------------
; LIGHT ON DELAY MODIFER
; TABLE
; DELAY vs %TPS
;
; TABLE = (SEC*10)/L836D
;--------------------------------
L836D: FCB 2 ; SCALER; DELAY TPS
;----------------
L836E: FCB 150 ; 30 0.0 %
L836F: FCB 150 ; 30 12.5
L8370: FCB 150 ; 30 25.0
L8371: FCB 150 ; 30 37.5
L8372: FCB 150 ; 30 50.0
;---------------------------------
**************************************** ***********
* XMISSION PARAMS
**************************************** *********

 

It's not lazy to try and 'use what you got'. That's just smarter than 'most' folks.