Thread: Radiator fan on 96 GP won't work

there should be 2 sending units one for the gauge the other for fan turn on (I think) the computer on the '97 turns on the fan so I think it would on the '96

My rad fan wouldn't come on until the temp hit 230. Why the factory set the car up this way I have no idea. Why the thermal switch goes into the computer and not the fan relay I also have no idea, but I didn't feel like reprogramming the computer, so I got a $27 Flexalite adjustable thermal fan switch from Summit. Came today and took an hour to put in.

Job is easy as can be. Run an "always on" power source to the switch and cut into the light blue wire to use the factory fan relay. Put the probe in the bottom of the rad (in the fins, not the water passage). Turn on the car, set the switch to have the fan come on at 200 degrees (5 degrees after the thermostat opens) and JOB DONE.

Works perfectly. Now I can sit in traffic all day long, if I have to and the temp never oes above 200.

Everyone should do this $27, 1 hour fix. You'll never worry about your climbing temp gauge in traffic again.

Boatman.

If you think it's a great idea to have your computer only turn on your fan in traffic at 230 degrees, by all means, leave you car the way it is and enjoy your toasty engine in traffic.

If you know about the wiring on these cars, you'd know that the computer does not check the temperature of the coolant in the radiator, the factory thermal switch is in the block. I left that switch and wiring intact so the computer still knows what the temp of the coolant in the block is. I just set up a parallel system to keep the engine cooler in traffiic than the 230 degrees the factory intended.

Boatman.