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03-22-2009, 12:01 AM
Factory (tow package one) alternator here - I don't see a huge voltage dip when it's running, but I do see a bit of a drop.
Bear in mind, mine only runs at 100% when the AC or defrost is on (DC Controls box is running it)
04-14-2009, 08:18 PM
My first alt crapped out me shortly after installing the fan. BUT I didn't have the controller in yet and was prone to leaving it on high for long periods of time. Since the controler went on it seems to be fine.
05-03-2009, 01:41 PM
my shitty amp from napa keeps blowing. any ideas for an upgrade?
05-03-2009, 02:32 PM
Your fuse? What size are you running?Originally Posted by zj95maxx
05-03-2009, 08:16 PM
Just get the 120 amp for the V8. Search for the swap article, it's simple. The V8 has a 7 rib belt the I6 a 6 rib. So swap the pulleys, change out the plastic ear for the cable (it is 180 degree out) and push the ferule out/in till they match. The frame is the same size just a little more filling with copper for the higher current output. I tried the local junkyard but every one they showed me was a 90 amp and mismarked. Guess I will buy new when I have the time for the rest of the install time.
Ebay has some rebuilt units that are stock frames but rewound for higher current. Not sure if I trust them though.
05-03-2009, 08:43 PM
Found out he isn't talking about his amp. He's talking about his 30 amp RELAY that he uses to run his fan.
05-03-2009, 09:19 PM
ayyyyyyyyyyy
05-04-2009, 12:59 PM
Hmm that was unforseen.
I noticed the stock fuse on the Taurus is not small but is 30 amp. Wander if it is slow blow of something. I plan on use it on my install, just gonna bypass the low speed and let the PCM control it.
05-04-2009, 05:43 PM
I instaled a Taurus fan on my 99 wj. I wired the high speed right into the factory plug for the stock e-fan and it has been working for 3 months now!
05-23-2009, 01:33 AM
Well I blew my 2nd alternator! Forgot to turn my headlights off when I hit the trail and that with low engine speeds, frequent stops and idling, some high rpm attacks on snow drifts must have been more than the 90amp stocker could handle.
I picked up a new one for a '98 ZJ with the 5.9HO. Its listed as 136amp alt but the sticker on it says 90amp at 2000RPM and 150amps at 6000rpm. I'm assuming that is alt rpms and not engine rpms.
I noticed the pulley is a fair bit smaller, should help keep the amps up at low idle speed.
I also installed a second battery. I'm hoping between those two upgrades I won't have anymore dead alts. However when I did test it at idle with the fan on high it would quickly drop from 13.7 volts to 12.5 and then slowly over time drop to 12v.
Anyone else have alt troubles? This is a stock alt for a Ford Taurus, I'm having trouble believing Ford put a 150amp alt in a Taurus just to run a fan. I wonder if something is wrong with mine and pulling too many amps....
05-25-2009, 11:20 PM
Mine drops to very near 12v by the dash gauge when the fan is in warp speed. Seems to happen more when the stereo (small amp) and/or headlights are on, worse when the rear defroster is on. I haven't blown any alternators though.
I don't think my controller runs full amperage to the fan either - I think it's peaked at 35. I can get up to a 50 from DC Control.
06-03-2009, 12:35 PM
I also just did this swap on my 97 zj along with a new radiator. one month old and always sitting right under the halfway mark. when i kick it to high i dont see it drop any low it stays the same. I hope to use high when i am crawling slow
06-15-2009, 09:14 PM
Can someone tell me which wire to hook to positive, orange or yellow (which one is high fan speed?), I can't tell the difference.
Last edited by rtingdds; 06-15-2009 at 09:25 PM.
06-15-2009, 11:20 PM
I've always seen different colors when I was pulling them from the yard - might be aftermarket, or Ford was just keeping people on their toes.
Jump the wires straight to the battery, one at a time - you'll know which one is high...the assembly will try to jump out and bite you....trust me
06-16-2009, 12:56 AM
Well I'm beginning to think I had a bad fan right from the start. I installed a brand 136amp alt for a 5.9l, and wired in a dual battery setup and was still seeing quite a drop on the voltage gauge when I kicked in. Then on a run yesterday it started to burn up. You know that nice electrical/plastic burning smell. The that lets you know that the magic smoke that makes all electrical stuff work is escaping.
Anyway its defiantly toast. Fortunately I still carried my old mechanical clutch fan with me so I swapped it back in and finished the run with no problems. This weekend I'm going to try and go find another.
10-21-2009, 11:24 PM
ok i did the fan swap everything is nice and hooked up but the fan wasnt kicking on, and im usin that damn dcc box, anyone else have the same problem?
10-22-2009, 10:46 PM
I just installed a taurus fan and a DCC box. It is working just as it should. DCC shorted me on the jumpers but other than that I am having no problems.
I would jump the fan straight to power and make sure it is working and double check the wiring to box
10-23-2009, 02:07 AM
i rewired everything today and i got plenty of power goin in but no power comin out.
10-23-2009, 11:56 AM
maybe the rad temp sensor is no good, try putting power to the a/c signal wire(blue wire), that should send power out to the fan regardless of the rad temp
10-26-2009, 11:09 AM
i tried that trick to and still nothin, the guy told me everything is tested when they ship out but its still not working, wtf this is a PITA big time!!!!
10-26-2009, 01:59 PM
you have a multimiter? Make sure your getting power to the fan motor, check the voltage right at the fan to see.
10-26-2009, 09:29 PM
reground the box
11-05-2009, 01:49 AM
i wired my fan up with a relay/solenoid for 200amps. i got it for like 50 bucks from a car parts place. just check all of the wires for power and make sure all of your connections are good. also straight wire the fan to make sure your fan works.
01-03-2010, 04:05 AM
Just an update, I must have got a bad fan from the wrecker right from the start. Got another one after the first burned up and its been good for almost a year now.
If you do upgrade to 5.9L alt get the matching belt. The 5.9L(136amp) alt has a smaller pulley and my stock 5.2L belt was just a bit too long and squealed when under load. Picked up a belt from a 5.9L and its been all good.
01-15-2010, 01:30 AM
Haha, must have spoke too soon. Not really a fan issue but an Alt issue. The new 136 amp alt was too much for the stock wiring. Blew the alt fuses, took me awhile to figure out there are two of them running in parallel.
I ended up adding an extra 4ga cable directly from the alt to the battery. This was an addition to the stock one that runs all over to the place, then splits into two lines, goes thru the fuse box and finally into the battery. Hopefully this will finally end my fan/battery/alt problems.
Oh yeah, added an extra ground as well, another 4ga from the alt bracket to the neg battery post. I'm not THAT stupid.....
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