WJ Power Steering Fluid Radiator Enhancement - JeepForum.com

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post #1 of 34 Old 03-25-2006, 01:27 PM Thread Starter
nedsud
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WJ Power Steering Fluid Radiator Enhancement

Last Summer when on a trail ride and after ascending a rock slide, my power steering hose blewout. It over heated from the rock action. since it blew out again so I replaced the hose again. I looked at the stock fluid radiator and it is tiny and not in the flow of air.

I have been thinking about adding a larger radiator for the power steering.

Has anyone done this?

Ned
http://jeepgrandcherokeelimited.blogspot.com/ for jeep WJ pics


Last edited by nedsud; 06-08-2006 at 09:18 PM.
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post #2 of 34 Old 03-25-2006, 02:47 PM
greasefingers
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Iím not sure that I follow you. Are you interested in a bigger radiator, if so then get a three row rad. But it almost sounds like you are interested in a power steering fluid heat exchanger?

Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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post #3 of 34 Old 06-08-2006, 09:23 PM Thread Starter
nedsud
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on my wj, there is this small radiator about 3 inches wide and 9 inches tall. it is connected to the power steering fluid line. it exists in front of the radiator, but off to the side. the way it is positioned, it looks like there is little air flow going through it. so i was going to replace it with a 10 x 10 or something like that. is this clear?

WJ photos - http://jeepgrandcherokeelimited.blogspot.com/
2000 WJ Limited, V8, rear limited slip, BFG AT KO, 2 inch BB, BMG Roof Rack, CB radio, Fire Ext., Compressor, front tow hooks, rear recovery shackle
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post #4 of 34 Old 06-09-2006, 06:30 AM
greasefingers
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Is it stock for WJs to have a power steering cooler, or is this something that you added?

Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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post #5 of 34 Old 06-09-2006, 07:34 AM Thread Starter
nedsud
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I dont know. I did not add it. I am not the orginal owner.

WJ photos - http://jeepgrandcherokeelimited.blogspot.com/
2000 WJ Limited, V8, rear limited slip, BFG AT KO, 2 inch BB, BMG Roof Rack, CB radio, Fire Ext., Compressor, front tow hooks, rear recovery shackle
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post #6 of 34 Old 06-09-2006, 08:06 AM
Double E
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I guess I need to look more closely but on mine, I assumed that was the tranny fluid cooler.


I had a similar thing happen to my PS hose while towing the heavy old boat. The hose popped off & sprayed the header putting out a huge cloud of thick white smoke. (Great show for traffic.)

The pressure had just caused the hose to pop off the fitting. Did your hose actually rupture?

Anyway, I had a bottle of fluid nearby and a screw-type SS hose clamp and was on my way.

If your hose ruptured, I'm going to get some braided stuff soon for mine.

Are you certain it's the PS system's fluid cooler you're looking at?

2000 Laredo 4.7L Selec-Trac. 177K miles, Leather, 245 tires, tow package, crappy CD changer, full size spare, roof cross-rails & sunroof.
Changes & fixes: Rear Addco sway bar & greasble bushings, upgraded headlights, upgraded tail lights, new hood struts (replaced 2X), new rear hatchglass struts, new radiator (replaced 3X), new oil pressure sending unit (replaced 4X), 2 new speed sensors, 2 new door lock actuators, new ignition key cylinder, chrome front tow hooks, Mobil 1 Synthetic 5/30, Purolator Pure One oil filter, EBC slotted & dimpled rotors, EBC Greenstuff pads, new front shocks (replaced 3X), new rear shocks (replaced 2X), new IRO steering stabilizer, new timing chain cover, new water pump, thermostat, new thermostat housing, new high pressure power steering hose, Michelin-X radials, new sunroof assembly, new single-piece lug nuts, new exhaust manifold studs & gasket on driver's side, new Durango alternator. Jeepforum.com sticker, Visit cobaltboatsforum.com when you can!
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post #7 of 34 Old 06-09-2006, 08:14 AM
greasefingers
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Yea power steering coolers are not that common (usually an add-on). He probably is looking at his external tranny cooler, which comes with the towing package.

Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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post #8 of 34 Old 06-09-2006, 08:15 AM
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The tranny cooler for WJs are built into the engine coolant radiator. Power steering fluid radiator is a small separate unit.
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post #9 of 34 Old 06-09-2006, 09:23 AM
greasefingers
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Every automatic transmission has a tranny cooler built into the radiator. If one sees an external cooler mounted in front of the A/C condenser, then 99.86 % of the time it is a second externally mounted tranny cooler. These external mounted tranny coolers are almost always supplied with towing packages.

If in doubt, follow the lines.

Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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post #10 of 34 Old 06-21-2006, 08:58 AM Thread Starter
nedsud
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I have followed the lines and this small cooler is about 4 inches wide and 7 inches tall and connects to the power steering.

WJ photos - http://jeepgrandcherokeelimited.blogspot.com/
2000 WJ Limited, V8, rear limited slip, BFG AT KO, 2 inch BB, BMG Roof Rack, CB radio, Fire Ext., Compressor, front tow hooks, rear recovery shackle
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post #11 of 34 Old 06-21-2006, 10:51 AM
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pics pics pics pics

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post #12 of 34 Old 06-21-2006, 01:04 PM
Handed
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It probably is a power steering cooler

Also for those of you in the know, the tow package comes with an external tranny cooler and not a power steering cooler, is that correct...although the power steering cooler definelty would help.

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post #13 of 34 Old 06-21-2006, 01:09 PM
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I'm not sure about WJs but ZJ has no external power steering coolers. I've seen some folks add external tranny cooler to power steering system as a mod though
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post #14 of 34 Old 06-21-2006, 01:11 PM
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Don't know about WJ's (other than it stands for Woosie Jeep)
However, perhaps this bit of ZJ tech can be modified to work for you.
On the 5.2 liter ZJ, the transmission cooler is mounted on the passenger side in front of the radiator. On the 4.0 Liter ZJ, the transmission cooler is mounted on the driver's side in front of the radiator. The two units have different numbers because of the way they are plumbed. It is a fairly easy and common mod to get a 4.0 cooler and adapt it to the power steering unit, significantly decreasing PS fluid temperature.

HTH

BTW, just kidding about the woosie part...

Warren
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post #15 of 34 Old 06-21-2006, 02:06 PM
greasefingers
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I am still trying to figure out why a power steering pump cooler would ever be needed

Cheers Steve

94 Black Laredo 4-Liter with QuadraTrac (42RE trans & NP249 TC) 200,000 + miles purchased new

88 Cherokee 2-door with 5speed manual 139K miles(deceased) purchased new
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