How do you replace fan sensor relay?

Answer 1

I'm about to change mine, first of all make sure that your fan is operating. You will look beside the radiator shroud on the pass. side. There is a plug with 2 wires, cut away from the side of the (blue wire) enough to expose the copper wire. Jump a wire to the + pos. battery post and make contact with the exposed wire leading out of the fan. The fan should come on, use a heavier gage wire to do this test. If the fan is working and your instrument temp. gage is registering you can now move onto the next step. If the temp. guage is not working you need to look at the fan switch which is located on top of the thermostat housing a brass looking thing with a plug on it. Now for the big one, unfortunately this fan relay is well hidden, I don't know why, maybe to have people get it done at the dealer, $$$. You will have to take off the front Bumper and the grill off of your vehicle. You will find the switch sitting along the chasis rail. Haven't gotten to do mine yet, but the switch cost me about $75. at the dealer. the relay is located under passenger side head lamp. you can remove the head lamp and abot 3-4 inches up you can drill a hole into the plastic. look through this hole to see the relay it has two small screws holding it down 5/16 head. looking at the relay you can bes where to drill lager holes to use a 1/4 drive extention and a swivel socket to un bolt it. remove relay from inside the engine compartment plug in new relay and slide it back into postion, note there is a small tab on the back of relay that will fit into a hole this needs to be in the correct spot. use trim adhesive or somthing else that is sticky to hold screws to socket "a magnetic socket is usefull" to install the screws. use masking tape tapped to the underside of headlamp housing then use a silicone to fill the holse so the new relay is protected from water and road salt. this is a lot faster and cheaper than disasembling the fron facia.