Search found 207 matches

by efloth
2023 Sep 21, 19:28
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: Electric fan control on Sd4x
Replies: 46
Views: 3891

Re: Electric fan control on Sd4x

This code worked out beautifully. I hard coded on/off setpoint values because I did not know how to reference an address this late in the code. I am not sure how to add a new reference address that would allow it.

Code: Select all

Sub_c600:
c600: ef,59,f9            call  bf5c             Sub_bf5c ();  'call datalogging routine
c603: 33,46,09            jnb   B3,R46,c60f      if (B3_R46 = 1)  { ' check if fan is on. If not skip to c60f
c606: 99,60,b6            cmpb  Rb6,60           ' compare ect with 60
c609: d6,03               jge   c60e             if (Rb6 < 60)  { 'if < 60 'if > 60 skip to c60e, turn fan off if not
c60b: 71,f7,46            an2b  R46,f7           B3_R46 = 0; }
c60e: f0                  ret                    return; }

c60f: 99,69,b6            cmpb  Rb6,69           'compare ect with 69
c612: de,03               jlt   c617             if (Rb6 >= 69)  { ' if ECT >= 69 turn fan on. skip to c617 if not
c614: 91,08,46            orb   R46,8            B3_R46 = 1; }
c617: f0                  ret                    return;
by efloth
2023 Sep 19, 09:47
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: SUB2 stock bin - '95 4.9L E4OD
Replies: 54
Views: 3532

Re: SUB2 stock bin - '95 4.9L E4OD

On second thought make sure you apply the ve patch first
by efloth
2023 Sep 18, 21:10
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: SUB2 stock bin - '95 4.9L E4OD
Replies: 54
Views: 3532

Re: SUB2 stock bin - '95 4.9L E4OD

Post the bin you're working with and I'll check it out
by efloth
2023 Jul 23, 12:08
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: Electric fan control on Sd4x
Replies: 46
Views: 3891

Re: Electric fan control on Sd4x

Should be able to start putting the truck back together next week. Thinking about writing the code in a super simple way. It will just be:

If fan is on and ect is below 205f (thermostat temp) turn fan off.
If fan is off and ect is above 211f turn fan on.

The relay board has selectable hi/low inputs so I have already tested wiring it to the ac clutch 12v wire with good success. I will use two relays for each input for redundancy.

Any issues with the code idea?
by efloth
2023 Jun 19, 11:45
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: SUB2 stock bin - '95 4.9L E4OD
Replies: 54
Views: 3532

Re: SUB2 stock bin - '95 4.9L E4OD

yeah just set Tstrat from 4 to 0
by efloth
2023 Jun 19, 11:42
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: EFI-SD36e
Replies: 8
Views: 1475

Re: EFI-SD36e

I have used SD48e DOE0 on a 91 and it worked flawlessly. The Solenoid pack change only moved diodes to the ecu. Having multiple diodes in the circuit will not create any adverse effects.
by efloth
2023 Jun 15, 14:29
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: EFI-SD36e
Replies: 8
Views: 1475

Re: EFI-SD36e

Sadly, I don't have it on the bench anymore. I suggest finding a EFI-SD48E ecu as they are plug and play on the 91. DOE0 box code is for the 7.5l and e4od. You could then run the strats already available for that series of ecu if you want to tune it.
by efloth
2023 Jun 13, 12:46
Forum: A1C - 80/90s EFI-SD4x Speed Density
Topic: SUB2 stock bin - '95 4.9L E4OD
Replies: 54
Views: 3532

Re: SUB2 stock bin - '95 4.9L E4OD

give'r a shot
Decipha_210620_SUB2.adx
(384.68 KiB) Downloaded 41 times