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I looked for a previous request I see none, Can you describe your issue?
you replaced the pump and rack? what was the original issue?
im sorry your right the newer ones have racks, Are the ball joints binding? any noise or popping? was this a factory pump or reman?
yes I am crappy design... Honestly its usually the pump is the cause.. Reman pumps can be garbage I have chased the jeep issue with many jeeps and 99 percent f the time its the pump.. give me a couple minutes im gonna dig thru the jeep tech manual Brb
Did you use atf4 like jeep recommends?
everything points to the pump even the 4.0 has this issue... I realize you have the v8
Hydraulic pressure for the power steering system is provided by a belt driven power steering pump and. The pump shaft has a pressed-on drive pulley that is belt driven by the crank shaft leverThe power steering pump is a constant flow rate and displacement, vane-type pump. The pump has internal parts that operate submerged in fluid. The flow control orifice and the pressure relief valve, which limits the pump pressure, are internal to the pump. The reservoir is attached to the pump body with spring clips. The power steering pump is used to drive the hydraulic engine cooling fan, which separates the flow to the fan gerotors and the power steering gear. The power steering pump is connected to the engine cooling fan by pressure and return hoses and the pump is connected to the steering gear via a return hose from the steering cooler. Use a factory pump and flush the system and use mopar atf 4 . There is no reason the gear would cause this unless it was binding or leaking.
and there is a TSB on the ps fluid..1999-2004 (WJ) Grand Cherokee 2003 - 2004 (ZB) Viper 2004 (ZH) Crossfire
The factory fill power steering fluid for most 2004 model year Chrysler Group vehicles is ATF+4 (MS9602) and it provides superior performance at both low and high temperatures. WJ/WG and ZH vehicles use unique power steering fluids. Refer to the table to identify factory fill and the approved service power steering fluid by year and model. Note that MS9602 is Red in color and MS5931 and MS9933 are Amber/Yellow in color. All three fluids will darken in color with usage and fluid color is no longer an indication of fluid condition.
The part numbers for MS9602 are 05013457AA (quart) and 05013458AA (gallon). The part number for MS5931 is 04883077 (quart). The part number for MB345 is 05127381AA.
MS9602 should not be mixed or used as a "topping off" fluid on systems requiring MS5931. On some past models, MS9602 should be used as the replacement fluid. On these models, if a power steering system is being serviced that results in a large fluid loss, such as a pump, hose or gear/rack replacement, the complete system should be drained and filled with MS9602.
Google it there is a ton of people with the same issue 99 percent its the pump. and 99 percent of the time its a reman pump that's the cause.. list on a factory pump is 156
here are the specs if you want to confirm
Relief Pressure +/- 50 1900 psi
Flow Rate (GPM)1100 RPM 2.4-2.8 GPM Minium @ 200 psi
The service information cautions that the pump is a special part # ***** a flow rate that differes from other Jeep models, although it may look the same externally.
By that, what the manual means is that this part number is ***** used on the vehicles that have hydraulic cooling fans that are operated by the power steering pump. You just want to make sure the parts store counter guys do not sell you the same part number used on other Jeep engines; they are NOT interchangeable although they may look alike.
A good counter guy will make sure of this; you have to be careful if you are dealing with some discount stores like Autozone or Advanced though; they often hire some pretty clueless counter people.
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I gave you the specs.. only thing left is a collapsed pressure hose or return
or binding ball joints
every drive a car with no power steering? it gets easier as speed increases
have you checked the ball joints?
The amount of flow provided by the pump depends on the car's engine speed. The pump must be designed to provide adequate flow when the engine is idling. As a result, the pump moves much more fluid than necessary when the engine is running at faster speeds.
The pump contains a pressure-relief valve to make sure that the pressure does not get too high, especially at high engine speeds when so much fluid is being pumped.
pressure check the pump?
possible but they have no test procedure