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Re: Heavy Towing: Electric fans or clutch fan?
I used the stock mechanical fan on my LQ4 swap just for reliability . Towing this summer tempatures reached 220 before the mechanical fan would engage on the hwy and 228 from a cold start sitting in traffic.
I am removing the mechanical fan and installing the grand Cherokee fan I had in previous with the old 327.
The reason I went mechanical is because I wanted cooling with ac on and electric fan off at road speed.I couldn't figure out how to accomplish this.
I have now set fan one on at 198 off at 190 and fan 2 on at 32 off at 320. I use the grounds to control 2 relays one for engine cooling fan and two for a/c I use the compressor clutch power to trigger the relay
I haven't driven it like this yet but I should work well.
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