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Originally Posted by BonzoHansen
The constant hot is the fan power off the fuse link. The switched 12v is ignition power (as per diagrams). That is good. You should be able to jump the ground, trip the relay and start the fans manually.
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i have the relay for the primary fan removed and i have wires in two of the ports leading to a switch on my center console so i can manually turn the one fan on at 160. i didnt want to wire both fans up cuz it makes the wires very hot. but one fan cant hold the temp down at 160 so it creeps back up to factory 220 and stays there. ive got one wire in the #30 port and one in the #87 port.
i put this switch in because one day it started to over heat and i noticed that the fans never came on. so i troubleshot from there and now im at the point where the ecm has to be tested but i really dont want to go to a dealership and pay for scan testing just yet. the car is obd1 so i doubt that the parts stores could scan it for free for me, i think they only have the troublecode scanners and im throwing no codes.
Bonzo, can you explain to me barney style how to test the ecm circuit, where its at etc? electrical is my weakest area of knowledge.
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93 Formula: If it bolts on then I've got it, only some more expensive red tubes to add underneath and to go inside the engine and trans left.
09 G8 GT: Vararam OTR ram air, American Racing long tube headers with x-pipe, Vector 93 ECM/TCM tune, Magnaflow axle backs, MSD ignition coils, Spohn rear trailing and toe link arms, poly differential and subframe bushings, 20 inch aftermarket Camaro rims, brake upgrades.
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