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Old 07-18-2005, 03:17 AM   #11
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2760-4600 cfm is alot of air! ( But that "at 0 Static Pressure" part has me a bit confused)does anyone know how much the stock fans pull?



Ed
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Old 07-19-2005, 01:42 AM   #12
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just to give you an idea our engines pull about 450CFM at redline i think.
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Old 08-01-2005, 06:49 PM   #13
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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.
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Old 08-01-2005, 07:04 PM   #14
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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.
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Old 08-01-2005, 07:10 PM   #15
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What does the PCM montior for the low speed fan? Do you think there might be a workaround?
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Old 08-01-2005, 08:11 PM   #16
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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.
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Old 08-01-2005, 09:09 PM   #17
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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
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Old 08-01-2005, 09:12 PM   #18
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Veddy Interesting. Got a schematic and fan motor specs?
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Old 08-01-2005, 09:13 PM   #19
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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.
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Old 08-01-2005, 09:18 PM   #20
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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?
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