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Hello all I'm having some trouble with my magnum. For some reason my cooling fans for radiator are not kicking on when up to temp but do turn on with ac on. I've put Brand new fan assembly 620-039XD( comes with control module on it) checked all fuses and all relays for fan assembly. Brand new coolant temperature sensor, I've ohm tested the wiring harness 4 pin connector from bottom of fuse box straight to fan connector and all checked out. I have no check engine light on dash or codes. Checked alternator and battery, battery sits at 12.8v car off and 13.5-14.1v on with and without ac on. Brand new jetcool 180° thermostat, no coolant leaks anywhere or shorts anywhere. Have tested the relays with a tester at orileys and all 3 tested good. Only thing I can think of now is fcm maybe? Again im getting no check light or codes, headlights work, turn signals work, horn works, wipers work, ac works (halfassed) after clutch kicks on and then cooling fans it bogs down motor, maybe another symptom of fcm?
Last question if I get a used fcm aslong as that top p0xxxxxxxxak number matches will it be just plug and play or need vinned to my car? Thank you all.
Last question if I get a used fcm aslong as that top p0xxxxxxxxak number matches will it be just plug and play or need vinned to my car? Thank you all.