2760-4600 cfm is alot of air! ( But that "at 0º Static Pressure" part has me a bit confused)does anyone know how much the stock fans pull?



Ed

just to give you an idea our engines pull about 450CFM at redline i think.

This looks like a good thing. Although it is a complete replacement of the cooling fans and control system (just got off the phone with Flex-a-Lite). Does anybody know if by disconnecting the stock fans if it will set a code? I am guessing that it won;t. One could only benefit from that volume of air. Anybody tried these yet? The manusl override feature is a nice touch.

Disabling your stock fans will set an SES light if the PCM requests your low-speed fan to come on. This is not true for the High-speed fan.

What does the PCM montior for the low speed fan? Do you think there might be a workaround?

It monitors the voltage drop (or current draw) the low-speed fans use in normal operation. If it senses them on at the wrong time, or senses them off when they should be on, it sets a QDM A or QDM 1 fault in the PCM depending on year (OBD1 or OBD2).

This makes it tricky to trick, considering you need to trick both the off mode and the on mode.

Hmm...I'd have to say that'* not an issue with the 1993 SSEI'*. I've had only the low speed fan hooked up for about 6 months now and only about the last month or so under the PCM'* control. I've never seen any kind of fault set because of it. Of course mine seems to hate letting me know about problems, but I'm sure the light works

Veddy Interesting. Got a schematic and fan motor specs?

If you do a low-speed override on a 93, it will throw an SES light. It sees the fan running when it shouldn't be.

Interesting, never seen the issue. Surely it doesn't mind that it isn't running when it should be, I actually cut my harness and removed all PCM control. Maybe splicing into the wiring closer to the fans with a diode would be a solution?