DTSFab.com (Desert, Trail and Sand)
Automotive Powered Off Road (AKA: Buggys, Jeeps, Trucks, Etc,Etc. ) => "AP" General Discusion => Topic started by: Yummi on July 25, 2010, 12:16:11 PM
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So, trailer over to glamis, trailer works well, might consider some sway control on it - car haulers are simply not designed for rear engine cars. got light at around 70mph. Had 390#'s of ballast up front as well.
Real issue was the fans. Started out just fine. Car rips. Short little run just running through the gears and the fan did not fire off. On the bright side I was watching the gauge and it never got real hot. Also, I wired the warning light right. LMAO The fans were working before. So, I am confident this is a wiring issue. I have been poking around the fuse block, etc probably just got something loose. Just need to track it down.
As it was a "shakedown / night ride" we checked fuses, made some basic observations then loaded it up and came home. Had it been a weekend, I would have figured it out there. Worse case, I could have hard wired it. But, limited tools, hot, and I knew the time I spent doing that was the time I would have been riding. So, a few minutes riding, load it up and come home. Long day.
But, figured this is a good chance for some ideas on trouble shooting a fan. My guess is it is a connection somewhere. Any body have any words of wisdom? Also, why don't we run them hard wired? I have dual fans. Seems one could be hard wired - maybe too much headache. Any pearls of wisdom to share with the inept?
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What exactly is your definition of hard wired?
So that they run all the time when the key is on?
Uses more juice (drag on the alterator and engine a bit) and could over cool a lil if you have a really good sized radiator for your application.
I would put 12 volts via a wire or even jumper cables to the fans. Make sure they spin and this can also show you a bad ground at the fan.
The sending unit likely trips a relay that sends the heavy current on to the fans. You checked it?? If you have one?
If not the sending unit may need one?
You got power going to the sending unit?
Have to know your system a lil better to make a real educated guess.
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Test 12V+ from point of origin with a test light to the fan relay switch positive activation terminal. Check 12V+ from point of origin to fan relay power terminal with test light. Jump across 12V+ activation terminal to ground terminal on relay and check for 12V+ at output terminal of the relay with test light. At same time check for 12V+ at the fan/fans it/themselves. Report back. ;D ;D
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First off though check all ground wires at relay and fans.
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Yummi
I have mine hard wired Thur a switch. So ifen things get a little warm I can just flip a toggle and the fans will run until I shut them down. Just run a 12V+ Thur the switch to the fan side of the relay's. Works for me. Never need it on much but every now and then after a hard run before I shut the motor down.
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Hmm, not really wanting to go out and finger in out - procrastination is my friend today....