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Old 07-01-2024, 10:04 AM   #1
6600DURAMAX
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Join Date: Nov 2000
Location: Wheatfield IN, USA
Posts: 1,111
Vintage AC and kicking on fans

Have a K5 blazer with a complete Vintage Air A/C kit installed.

Blazer has a LS3 with dual electric fans – fans run through the emc/pcm and are set to come on at 165 then kick off tcm speed has reached 30mph. My question is how do I wire my fans to kick on and stay on when the AC switch is activated?

There is no way in the pcm/ecm programming to do this.

Concern is overheating/ pressurizing the high side of the compressor when there is no airflow ( for instance upon startup or sitting in traffic ) before the fans activate
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1972 K5 Build - plans - LS3-6L80e-One Tons.....

1971 CREWMAX Build.....at body shop for couple more years
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