I installed a Spal fan to replace the dual factory monsters. It tucks up in there real nice and probably flows enough to suck the car forward. . . when hooked directly to the battery. Problem is the bastard won't kick on in the car. I've tried it in both series parallel mode and aux fan mode, I've attached 3 tunes that failed to turn the fan on. Schematic is below, I see no reason for it not to work so it must be some retard logic inside the PCM.
Fan mod is failed attempt #1, I kept it in series parallel here but changed the values to prevent fan#1 from ever coming on. I also changed the AC pressure values so fan #2 would more closely mimic the function of fan #1.
Aux fan is failed attempt #2, only change here was switching it over to aux fan mode.
Aux fan 3 is the 3rd and current failed attempt, I plugged all stock information back into the fans (trying to outsmart the logic here) and just brought fan #2 down to kick on at the same coolant temp as fan #1.
I'm plugged into the right side fan plug and the left is just wrapped in tape. I'd like to get some factory style connectors on there, but for now I just need to get the damn thing working.