I had a similar experience with an aftermarket A1 Cardone pump, where the power assist would cut out when turning the wheel at low speed (parking lots, turning from a stop light, etc). It took a couple of tries to get a pump that was quiet like the OE pump or wouldn't randomly cut out. If I were to do it again I would go with a reman'd Mopar pump.
__________________ His: '00 WJ 4.7 Limited- Zone 4" SA lift, JKS BPE's
Hers: '03 WJ 4.7 Laredo- IRO 3", 245/75/16 Duratracs, Bilstein Shocks, JKS TB w/KOR Bushings, Rusty's A-Arm Spacer, CORE4x4 Adjustable Front Control Arms, Dynomax Exhaust, RB1 Nav -Coming Soon- Overland Rock Rails
Common replacement item.
You're losing pressure and air goes in & out, reducing assistance. Do not overfill that reservoir.
Take great care in putting the new hose in. It's easy to cross thread. Carefully examine the part the dealer provides you as a replacement too as some have reported getting a part that was not right.
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!