HELP HELP EFAN swap NO ac

[Mo0n]

i used the bp automotive ac pressure switch and factory fan harness and wired up as directed and fans working for cooling but do not work with ac as well as ac inop when manually turning it on. Can someone please have a look and see what im missing is it a table someplace or do i need to change cycling i set non_ppei cycling is that wrong setting but fan 1 does not work even if ac commanded on thru scanner

[dave w]

For engine swap vehicles, I use a Trinary Switch to control the fans when the AC is on. https://vintageair.com/tech-video-in...trinary-switch

The attached .pdf is a compare of fan parameters Tahoe vs. Corvette.

[Mo0n]

Thank you this is helpful . I do need to know what the difference of the ppei cycling or non ppei cycling or just analog cycling differences are as well , do i need to disable alternator f ?? This is wifeys Tahoe snd i just need fans to work as they should......
Or do i need to somehow update the os

[2xls1]

Did you replace the pressure switch with the pressure sensor and wire it in to the PCM connector? If so then you need to change the AC Type from Analog Cycling to Analog.

[Mo0n]

Yes i added the switch and wiring
it doesnt have the option of analog it has
0. PPEI_v7
1. PPEI_CYCLING
2. non_PPEI_v7
3. Non_PPEI_Cycling
4. Passive_v7
5. NO_AC

So what 1 is analog>>????????
i dont want to keep flashing this

please explain further

[2xls1]

I can't help with that. I use commercial tuning software and Analog is a choice. Here is a 02 F-body bin that uses Analog for AC type. Open it and see what your software shows for it. If I had to guess I would guess 0.