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A/C efan , Aux Fan Pics

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Old 04-28-2013, 03:32 PM
majerus majerus is offline
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Default A/C efan , Aux Fan Pics

Last summer I had issues with the a/c being luke warm. I had the entire system replaced, new compressor, evap, all sorts of other stuff and charged according to spec. Still was never cold to my liking. I was wondering if anyone has added a efan to the ac condenser and has pictures. My durango is a 99 with 5.9 and only has an mechanical fan. I understand the newer durangos 00 and above used an additional fan, i hit up two junk yards today and could not find a single one with an extra efan. I also did multiple Google searches and cannot find a pic with the additional fan.. Anyone have pics? Thanks.
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Old 04-29-2013, 10:53 AM
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I got rid of my mechanical fan altogether and replaced it with an electric fan from a 90s taurus that moves more air than the mechanical one ever did, and now my a/c is nice and cold.

Click the image to open in full size.
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Old 04-29-2013, 05:21 PM
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Do you tow with your durango much? I was thinking about removing mine however I was reading that when towing I would not be able to keep the thing cool. Also when I went to the junk yard yesterday I picked up a large fan from a Mercury Grand Marquis do you think that thing could move enough air? Also what did you do to control the on off cycles?

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Old 04-29-2013, 06:50 PM
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The biggest thing I usually tow is an atv trailer, so I don't really have a definite answer for that, however on paper the taurus fan should have no problem keeping everything cool.

I don't have any information on the crown vic fan. Try searching around online for airflow numbers.

I have a dakota digital fan controller that manages the fan according to the water temp, a/c state, and so on.

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Old 04-29-2013, 08:11 PM
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The controller looks good, just curious were you having ac issues and then decided to upgrade? Was the wiring pretty simple?
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Old 04-29-2013, 08:22 PM
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The main reason I ditched the mechanical fan was because after my stock fan clutch went out I couldn't get one that was as good as the original. They all sounded like a jet taking off for the first few minutes of driving and then in the time you'd be sitting at a red light (even if it was only for a few seconds) with the a/c on the clutch would completely engage again and sound roar for a while again and sometimes it didn't even disengage all of the way, not to mention the water temp would start going up at red lights. I was going to do the TSB v10 fan swap, but the parts for it were more expensive than getting the electric setup, which I think is better because the fan only has to run when it's necessary instead of constantly sapping power and it can run at whichever speed is necessary regardless of the engine speed.

Before I had the electric fan my a/c didn't work particularly well, but a combination of the electric fan and other various things now have it working fine. I'm not sure that it's all down to the fan, but then again there was a reason Dodge added a condenser fan in 2000.

The wiring was pretty straight forward. The controller came with one 70 amp relay and then I bought another 30 amp one so that it can make use of the separate high and low speeds of the taurus fan. For the most part I was able to get all of the electrical feeds (minus the main power for the fans obviously) from relays in the PDC by sticking the wire into the appropriate terminal on the relay and then just putting the relay back into place.

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Old 04-29-2013, 10:22 PM
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So i double checked the fan and it is a single speed so I am not sure how that is going to work out. Also I think this thing is going to pull a ton of amps on start. I will try to test it and post its amperage on here, the fan moves a ton of air though its unreal. Thanks for all the pics
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Old 04-30-2013, 01:22 AM
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If it's only a single speed fan I'd go for one of the Flex-A-Lite Variable speed controllers. It also has a function to turn the fans speed up slowly so that the startup spike is low. My controller just has high and low and the high speed startup spike is about 60 amps and then 30 amps steady. Low is about 15 amps steady, not sure what the startup is.

Not sure about your fan, but mine is 3750cfm of air.
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Old 04-30-2013, 08:20 AM
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I just bought Flex-a-lite 31165 Variable Speed Control Module, It had really good reviews and should be here Thursday.
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Old 04-30-2013, 12:33 PM
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that fan and shroud setup looks kinda small? Still about 20 percent of the radiator surface has no air moving thru it when idle can cause hot spots.

That is what is doing on my truck with my mechanical fan taken off. The OEM Efan can really keep the system cool. But have trouble maintaining 180 with A/C on and set to pull outside air when temp is 90 degrees. Temp is holding near 200 degrees.

I wonder when hot 100+ temps arrive to DFW to see if the Efan can still hold up as it is not covering the entire surface of the radiator (about 20percent of radiator does not have air moving thru it when idle.

May have to re-install my mechanical fan during the summer or add a 2nd efan similar to the user that did that with his RAM truck in this forum.
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Old 04-30-2013, 12:46 PM
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Do you have the link for the individual that added a second fan to his truck? Also the fan I am installing is an 18" out of a mercury version of a town car, it really moves some air. Ill post pics when I get it setup.
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Old 04-30-2013, 12:58 PM
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Quote:
Originally Posted by Kensai View Post
that fan and shroud setup looks kinda small? Still about 20 percent of the radiator surface has no air moving thru it when idle can cause hot spots.

That is what is doing on my truck with my mechanical fan taken off. The OEM Efan can really keep the system cool. But have trouble maintaining 180 with A/C on and set to pull outside air when temp is 90 degrees. Temp is holding near 200 degrees.

I wonder when hot 100+ temps arrive to DFW to see if the Efan can still hold up as it is not covering the entire surface of the radiator (about 20percent of radiator does not have air moving thru it when idle.

May have to re-install my mechanical fan during the summer or add a 2nd efan similar to the user that did that with his RAM truck in this forum.

There's only about an 1-2 inch gap on top where the fan doesn't cover. The inch or so on the side shouldn't really matter since the radiator is horizontal flow. Eventually I will make a shroud out of sheet metal for the fan, but right now I have absolutely no problems with it. The fan has absolutely no problem at all keeping the temperature down to the 180 degree thermostat temp even idling in traffic when it's 110+ with the a/c on. The fan usually isn't even running the whole time sitting in traffic, it'll run for a minute and then cycle off because it cooled it down to 180.

I have my low speed trigger set to come on at 185 and off at 182 and the high speed set to come on at 189 and back to low at 185. As far as I know the high speed hasn't ever had to come on to maintain the temperature. The only time the high speed is on is when the a/c comes on (a/c automatically triggers the high speed).
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Old 04-30-2013, 01:26 PM
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Still not having that 1-2 inch of of surface area with no air flow could cause hotspots.

I just know my 5.9 is a hot beast of a engine and always had trouble keeping it at 180 during the summer. Now with a recent water pump replacement, the Efan keeps the temp below 180 without A/C. Hughes team set my SCT tuner to enable the fan at 150 degrees so Efan stays running all the time. May need to pay the bucks and have them reprogram it to come on at 185 and off at 180 so the fan can short cycle as needed vs running the fan on continously after engine warms up. Had trouble keeping truck warm in the winter season with the fan coming on too early.

I need to find the OEM eFAN that came off certain year model jeeps that are Mopar Efans that pulls some crazy air similar to the Mark Fans that came out of the lincolns. Some users posted the part number from the jeep forums. The fan is louder than the usual Efan due to the amount of air it pulls.

I know my OEM Efan pulls pretty strong already. I can hold up a piece of paper 5 to 6 inches away from the radiator and can see the paper being pulled due to the amount of air being pulled.
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Old 04-30-2013, 01:33 PM
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@kensai, not sure if you noticed but the fan that That_guy is running is not the stock efan it is out of a Taurus. Also he is running a 5.2 opposed to your 5.9 , just a few differences I am not sure if they were noticed, however they should be pointed out. Did you happen to have the link for the individual on the 2nd gen ram site that had two efans installed?
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Old 04-30-2013, 02:23 PM
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Quote:
Originally Posted by majerus View Post
@kensai, not sure if you noticed but the fan that That_guy is running is not the stock efan it is out of a Taurus. Also he is running a 5.2 opposed to your 5.9 , just a few differences I am not sure if they were noticed, however they should be pointed out. Did you happen to have the link for the individual on the 2nd gen ram site that had two efans installed?
That is very true.

As far as adding 2nd fan. After some long searching, I remember the user had lv in his name and found it was lvram360 that did the 2nd fan install. Here is the link with pics of his installation. Very good original idea on how to install it and did a good job as well.

http://dodgeforum.com/forum/1st-gen-...ctric-fan.html
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Old 04-30-2013, 02:50 PM
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There are a couple people that I know of running the taurus fan with the 5.9 with no problems, IndyDurango is the first that springs to mind. I know ultimately I'll build a shroud, but like I said I have no problems with cooling even when its 110+ degrees.


I know the fans in the wj Grand Cherokees were hydraulically via the power steering pump, but the newer ones are probably electric.
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Old 04-30-2013, 09:09 PM
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I started on my electric conversion today, here are the pics. I really hate linking to external sites but seems like this forum likes to use photobucket so I created an account.

Here is a tool i made to lock the water pump with some stock and bolts I had laying around. The measurement between the two bolts is 2 1/2"
Click the image to open in full size.

Here is the fan in the shroud I need to figure out how to mount it yet.

Click the image to open in full size.

The bolt that is on the fan clutch do i need to re install it? I am kinda afraid the water pump pulley might fly off if i dont. Here is that picture.

Click the image to open in full size.

And a pic of the void the mechanical fan left.

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Old 04-30-2013, 09:31 PM
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The nut is just to hold the fan clutch onto the pump. I don't think it even comes off. Make sure you store the fan clutch upright (as it would be if it were still on the engine) otherwise it will go bad from laying flat.
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Old 04-30-2013, 10:09 PM
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Ill go set the fan upright, thanks for the tip.
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Old 04-30-2013, 10:11 PM
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No problem. It has to do with the fluid in the viscous coupling. I forget if it just leaks into the wrong place inside the clutch or leaks out of the clutch all together.
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