cooling fan problem (please see the bold font especially)

dudemaaan · 05-11-2008, 08:07 PM

ok well i got the relays in, and my problem is still there. i tested the relays and they all work. i discovered my old ones were working too. all but one of them anyways.

The problem seems to be the ECU is not grounding out the GREEN/Black wires on relays 2 and 4. What could the problem be?

If i unplug the relays, the green/black wires on relays 2 and 4 will receive power from the ECU 5v's positive voltage when i set the power fc to turn the fans on at 0. if i set them to a higher temperature then what the water temp is the voltage goes to 0. I'm under the impression that it's supposed to ground out the G/B wire, so why am i seeing 5v positive?

05-11-2008, 08:07 PM	#1
dudemaaan Rotary Fanatic Join Date: Mar 2008 Location: Brenham, TX Posts: 335 Rep Power: 18	ok well i got the relays in, and my problem is still there. i tested the relays and they all work. i discovered my old ones were working too. all but one of them anyways. The problem seems to be the ECU is not grounding out the GREEN/Black wires on relays 2 and 4. What could the problem be? If i unplug the relays, the green/black wires on relays 2 and 4 will receive power from the ECU 5v's positive voltage when i set the power fc to turn the fans on at 0. if i set them to a higher temperature then what the water temp is the voltage goes to 0. I'm under the impression that it's supposed to ground out the G/B wire, so why am i seeing 5v positive? __________________ 500+ HP thanks to: Fast reacting IAT sensor thread! Mechanical Pre-turbo Water Injection Thread Dual Stock fuel pumps Thread T2 differential swap!