93 Grand Prix Posted November 27, 2002 Report Share Posted November 27, 2002 I was wondering how do I make my cooling fans come on when I turn the ignition switch on. Is there a downfall to doing this? I want both fans to come on at the same time, with the ignition. What wires goes where? I read the w-body site about manually cooling fans, but I want no switch. Please let me know about problems this will cause. Quote Link to comment Share on other sites More sharing options...
Brian P Posted November 27, 2002 Report Share Posted November 27, 2002 I dont think it's really a good idea to run them as soon as the car is started. First off they won't be doing much any cooling at all until the thermostat opens and coolant starts circulating through the radiator. Plus all the extra time the fans are on will shorten their life exponentially. However if you really want to wire it that way, all you have to do is rewire the two relay sockets so the "turn on" +12V reference signal is wired up to something that is "hot" in run only Quote Link to comment Share on other sites More sharing options...
GnatGoSplat Posted November 27, 2002 Report Share Posted November 27, 2002 Very simple! Just substitute a wire in place of the switch, and voila! Fans on with ignition on. One downfall other than what Brian has mentioned, is that at highway speeds, you don't want the fans running at all. Before I put that page up, I got a lot of requests for manual fans, but to this day I still don't understand it. Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted November 27, 2002 Report Share Posted November 27, 2002 well i have mine hooked to a switch. where it will run the way it would or i can flip the switch and it runs. by the way out of the question is my car suppose to have 2 fans cause i see the holes for one but i was wonderin if i am or not thanks Quote Link to comment Share on other sites More sharing options...
Brian P Posted November 27, 2002 Report Share Posted November 27, 2002 I don't think 89 uses the big single fan, but maybe yours is an 89 made in 88? Do you have air conditioning? Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted November 27, 2002 Report Share Posted November 27, 2002 yeah mine has air conditioning and i think it is suppose to have 2 fans but i was was unsure Quote Link to comment Share on other sites More sharing options...
Brian P Posted November 27, 2002 Report Share Posted November 27, 2002 so you only have one little fan that is about half the length of the radiator/condenser? Quote Link to comment Share on other sites More sharing options...
stlunatics2oo3 Posted November 27, 2002 Report Share Posted November 27, 2002 yeah it shows like some holes where one should be Quote Link to comment Share on other sites More sharing options...
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