A little tip for C6's that run hot

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06-20-2015, 11:47 AM

#121

5 Liter Eater

Le Mans Master

Member Since: Aug 2002

Location: Houston TX

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St. Jude Donor '11

Quote:

Originally Posted by RoadRebel

You can set the ECM Fan controls to "discrete" and the PWM Freq to 128HZ and you can drive a relay from its outputs. You can also change it to 2 fans instead of the factory single and drive from the 2 ECM pins separately.

Phil, I tried this today on an '09 Z06 and it doesn't seem to work. Not getting any voltage out of the PWM wire. Discrete/128 Hz

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06-20-2015, 12:14 PM

#122

5 Liter Eater

Le Mans Master

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St. Jude Donor '11

Tried playing with number of fans, frequency and set all the fan relay control states to 1. Still no go.

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06-20-2015, 01:52 PM

#123

schpenxel

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St. Jude Donor '15

Really don't think the average relay is going to handle 128hz. A solid state relay should be able to, though.

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09-17-2017, 02:40 AM

#124

ALTRDTA

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Did anyone ever figure out if you can definitely make the stock fan wiring control the relays? I would prefer that over buying an aftermarket switch for it.

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09-17-2017, 03:43 AM

#125

mourat

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LOL revived from the dead. I don't see an issue, mine has been running a relay for years? I can post my settings in HP tuners if you like. Just PM me.

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