So i go out to my car this morning and it try and start my car. Nothing, not a click or anything at all. Battery is gone, so i go to autozone and get a new optoma battery($130!!!!!) and install it. As soon as i connect the power i hear a fan come on. I know if your car is hot, when you **** it off the fans will run until it cools off, but the car sat for 2 days. This is probably why my battery died. Now onto the problem: With the new battery the fans stay on no matter what and i havent done any mods to the fan(aka fan switch mod). Anyone have any idea WTF is goin on??

 

Fan relay contacts welded shut?

 

Sounds like a good time to install that fan switch

 

check/replace fan relays

 

mine did that too. it was to weak to crank so I put it on the charger and when I did the fans came on while it was charging and they stayed on for like 30 min and then shut off. Hasn't done it since so I just let it go.

 

Wow...thanks to all with the quick post. In the time you guys posted i fixed/found out what the problem was. The bottom right relay had come off of the bracket that it is held onto. It rained last night, and with a vented hood it did it no good. The relay was completely upside down and full of water, this shorted it out causing the fans to stay on permamently. I unhooked the relay, and took a blow dryer to the relay, cleaned it off, and its back to normal! Thanks again for the quick responses !!!

 

Good to hear you get it figured out.