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Old 02-23-2011, 06:16 PM   #1 (permalink)
keith theriot
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no volts at ECM pin for cooling fans

Eric told me that the chip is set for the fan to come on at 166 but it doesnt, i looked at the ecm pinout log and D2 pin should have + battery voltage and it doesnt at 170 degrees. I have an 85 hot air and i am installing dual electric fans and want to let the ecm control fans, i have converted to 86-87 ecm. any ideas?
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Old 02-23-2011, 09:25 PM   #2 (permalink)
GNVenom
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You won't see positive voltage at that pin. It's supposed to go to ground to energize the relay.
The only pin that goes positive is the fuel pump relay drive.
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