Power steering pump pushing fluid back up through reservoir

Which power steering system does your vehicle have ? EPS - electric power steering or hydraulic power steering . Do you have a EPS light lit on the instrument cluster ?

Power Steering System Description and Operation (EPS)
The power steering system reduces the amount of effort needed to steer the vehicle. The system uses the powertrain control module (PCM), body control module (BCM), power steering control module (PSCM), discrete battery voltage supply circuit, steering shaft torque sensor, steering wheel position sensor, power steering motor, driver information center (DIC), and the serial data circuit to perform the system functions. The PSCM and the power steering motor are serviced as an assembly and are serviced separately from the steering column assembly. The steering shaft torque sensor and the steering wheel position sensor are not serviced separately from each other or from the steering column assembly. The steering column assembly does not include the power steering motor and module assembly.

Power Steering System Description and Operation (HPS)
The hydraulic power steering pump is a constant displacement vane-type pump that provides hydraulic pressure and flow for the power steering gear. The hydraulic power steering pumps are either belt-driven or direct-drive, cam-driven.
The power steering fluid reservoir holds the power steering fluid and may be integral with the power steering pump or remotely located. The following locations are typical locations for the remote reservoir:
• Mounted to the front of the dash panel
• Mounted to the inner fender
• Mounted to a bracket on the engine
The 2 basic types of power steering gears are listed below:
• A recirculating ball system
• A rack and pinion system
In the recirculating ball system, a worm gear converts steering wheel movement to movement of a sector shaft. A pitman arm attached to the bottom of the sector shaft actually moves one tie rod and an intermediate rod move the other tie rod.
In the rack and pinion system, the rack and the pinion are the 2 components that convert steering wheel rotation to lateral movement. The steering shaft is attached to the pinion in the steering gear. The pinion rotates with the steering wheel. Gear teeth on the pinion mesh with the gear teeth on the rack. The rotating pinion moves the rack from side to side. The lateral action of the rack pushes and pulls the tie rods in order to change the direction of the vehicle's front wheels.
The power steering pressure hose connects the power steering pump union fitting to the power steering gear and allows pressurized power steering fluid to flow from the pump to the gear.
The power steering return hose returns fluid from the power steering gear back to the power steering fluid reservoir. The power steering return line may contain an integral fin-type or line-type power steering fluid cooler.
In a typical power steering system, a pump generates hydraulic pressure, causing fluid to flow, via the pressure hose, to the steering gear valve assembly. The steering gear valve assembly regulates the incoming fluid to the right and left chambers in order to assist in right and left turns.
Turning the steering wheel activates the valve assembly, which applies greater fluid pressure and flow to one side of the steering gear piston, and lower pressure and flow to the other side of the piston. The pressure assists the movement of the gear piston. Tie rods transfer this force to the front wheels, which turn the vehicle right or left.
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Power Steering Fluid Reservoir Outlet Hose Replacement

Removal Procedure

1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
2. Remove as much power steering fluid from the remote power steering fluid reservoir as possible.
3. Place drain pans under the vehicle as needed.


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4. Disconnect the power steering fluid reservoir outlet hose (1) from the remote power steering fluid reservoir.


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5. Disconnect the power steering fluid reservoir outlet hose (1) from the power steering pump.
ImportantDisconnect any clips as needed before attempting removal.

6. Remove the power steering fluid reservoir outlet hose from the vehicle.

Installation Procedure

Hope this helps a little.

hi robin.
The first sign of fluid leaking from the power steering is a pump whine, because the fluid is low, the pump will start to make a whine noise, especially when turning the steering wheel.
If you think you may have a car power steering leak, the first thing you should do is check the power steering fluid reservoir, if the fluid level in the reservoir is low, you just might have a leak in the power steering system.
Power steering fluid has a very distinctive smell, it smells like a burnt marshmallow, that is my opinion on the smell, and I'm sure you will not find that documented anywhere on the internet or any repair manual.

If you feel the steering in your vehicle binding up, or the power steering pump starting to make whine noise, it's a good sign your power steering fluid level is getting low or it's empty. Running the power steering pump with low or no fluid could be very damaging to the entire power steering system because metal particles from the pump enter the system and cause internal failure of the steering rack and to its valve body or to the steering gear box.

problem in the valve controls for the power steering
take it to an accredited steering specialist shop that handles your make of vehicle and have it pressure tested and properly diagnosed

there should not be any drop as when the steering wheel is turned the oil on one side of the steering valves pushes the piston across as the oil on the other side is returned to the reservoir when there is no steering action the pump just circulates the oil via a bypass circuit and so the oil level is stationary
However discuss this with the specialist shop to make sure that you understand how it works

First thing you need to do is remove thwe return line from your power steering reservoir. Thats the thing you put the power steering fluid in. Run that hose to a large container where you can catch a lot of fluid in. Now you want to make sure you have your new power steering fluid on hand before you start and another person would be very helpful also. Have your helper start the car and turn the wheel back and forth while you pour power steering fluid in the reservoir. Do not let your power steering fluid run completely out you can ruin your pump and or steering box. Continue to pour in new steering fluid until the fluid coming out of the hose thats in the bucket is clean fluid. Turn vehicle off reconect the hose to the reservoir and top off. With the lid off reservoir start the vehicle back up and turn wheel all the way back and forth many times(do not turn it to its furthest position where it bumps) continue to make sure the fluid level is always full. By turning the wheel back and forth you are bleeding the lines to get all the air out. Do that a few times, refill and put the cap back on. You just changed your power steering fluid. I f your vehicle is old you may want to get new rubber hoses for your power steering system. hoses degrade over time and eventually they start to flake off into your fluid which can damage parts. Always a good idea to replace hoses especially if they are soft.

disconnect the return pipe to the reservoir,and put it into container to catch the oil.block off the hole in the reservoir[where the hose would have gone].fill reservoir with new ATF oil.jack front of vehicle up,turn the steering back and forth.that will purge any old oil into the container.briefly start motor,that will push new oil thru the system,and clean out pump.then reconnect return hose,refill reservoir,and start motor,turning the steering back and forth,making sure reservoir is always full.when the oil stops going down,put vehicle back on ground,and check power steer operations

Chrysler Cirrus/Stratus/Sebring/Avenger/Breeze 1995-1998
Power Steering Pump - REMOVAL & INSTALLATION

Cirrus, Stratus, Sebring Convertible and Breeze
(see Figures 1, 2, 3 and 4)

1. Disconnect the negative battery cable from the left strut tower. The ground cable is equipped with an insulator grommet, which should be placed on the stud to prevent the negative battery cable from accidentally grounding.
2. Siphon as much power steering fluid out of the reservoir as possible.
3. Raise and safely support the vehicle.
4. Remove the right front tire and wheel assembly.
5. Remove the splash shield from the right front wheel well.

Fig. 1: Power steering pressure hose attachment to the pump-with Variable-Assist steering



Fig. 2: Power steering pressure hose attachment to the pump-without Variable-Assist steering

1. Disconnect the power steering pressure hose from the pump.
2. Remove the hose connection on the power steering pump.
   

Fig. 3: Typical power steering pump front bracket attachment

1. Remove the power steering adjusting bolt.
2. Remove the power steering pump rear attaching bolt.
3. If so equipped, remove the Anti-lock Brake System (ABS) hydraulic control unit heat shield.
4. Remove the wheel speed sensor retainer bracket from the right inner fender.
5. Remove the wheel speed sensor sealing grommet from the right inner fender.
6. Disconnect the speed sensor wiring.
7. Push the wiring through the hole in the inner fender.
   

If not equipped with anti-lock brakes, the hole will just have a sealing plug.

1. Remove the bolt attaching the power steering front bracket to the mounting bracket. Access to the bolt is gained through the hole for the speed sensor wiring.
2. Remove the power steering pump drive belt.
3. Remove the power steering pump and the front bracket as an assembly.
   

To install:

1. Install the power steering pump and bracket.
2. Reinstall the bolt at the adjusting slot, but do not tighten.
3. Reinstall the bolt mounting the power steering pump to the rear mounting bracket, but do not tighten.
4. Reinstall the power steering pump top bolt, but do not tighten.
5. Reconnect the power steering hoses.

Fig. 4: Install a new O-ring gasket on the hose fitting
Use a new O-ring when reinstalling the power steering pressure hose.

1. Reinstall the drive belt.
2. Adjust the drive belt and tighten the power steering pump bolts to 40 ft. lbs. (54 Nm).
3. Reinstall the splash shield.
4. Reinstall the tire and wheel assembly.
5. Lower the vehicle.
6. Reconnect the negative battery cable.
7. Refill the reservoir and bleed the power steering system.

Sebring Coupe and Avenger

1. Disconnect the negative battery cable.
2. Remove (drain, suction pump, etc.) as much power steering fluid as possible.
3. Disconnect the return fluid line. Remove the reservoir cap and allow the return line to drain the fluid from the reservoir. If the fluid is contaminated, disconnect the ignition high tension cable and crank the engine several times to drain the fluid from the gearbox.

Cover any components located underneath the power steering pump with a shop towel to protect them from damage due to power steering fluid spillage. For example, the A/C compressor or alternator, depending on vehicle and engine, is below the power steering pump, so cover the A/C compressor or alternator with a shop towel before removing any hoses.

1. Loosen (but do not remove) the power steering pump mounting bolts and remove the drive belt.
2. Remove the pressure switch connector from the side of the pump.
3. Disconnect the pressure line.
4. Unbolt and remove the pump from the mounting bracket.

To install:

1. Clean all parts well. Inspect the pump pulley for cracks. Check the hoses carefully for cracks or signs of weakness.
2. Install the pump, wrap the belt around the pulley and lightly tighten the mounting bolts.
3. Replace the O-rings and connect the pressure line. Connect the pressure line so the notch in the fitting aligns and contacts the pump's guide bracket. Tighten the fitting to 13 ft. lbs. (18 Nm).
4. Connect the return line and secure with the clamp.
5. Fasten the pressure switch connector.
6. Adjust the power steering belt for proper tension and tighten the adjusting bolts.

Use only MOPAR ATF PLUS automatic transmission fluid type 7176, ATF+3 automatic transmission fluid, or equivalent, in the power steering system of Sebring coupe and Avenger models.

1. Refill the reservoir and bleed the power steering system.

Hope this help to solve it (remember comment and rated this). TY for using Fixya.

Your problem could be a pressure side hose that has a rupture that only leaks in extreme conditions. Inspect to replace with new to repair problem. First make sure you have removed the pump caps off of the hose fittings. If ok, it appears you may have a stuck valve in the rack assembly. Replacing the rack should solve your problem. ------- The new pump should be self-bleeding by turning the wheels left and right. Let sit over night to release air bubbles, recheck fluid level.------ Check the tension of the drive belts on the pump, as they may be loose. The power steering pump and reservoir is located on the front of the engine driven by one of the fan belts. There is a removable cap on the top with a dipstick attached. With the engine off, fill this up to the full mark with power steering fluid. Replace the cap, start the engine and check for leaks. On the back of the pump are two hoses either one could be leaking. REPAIR PROCEDURE:
1. Wipe the power steering cap and area free of dirt. Remove the power steering cap.

2. Use a siphon pump to remove as much fluid as possible from the power steering fluid reservoir.

3. With a helper in the vehicle, raise the vehicle on an appropriate hoist.

WARNING :POWER STEERING FLUID, ENGINE PARTS, AND THE EXHAUST SYSTEM MAY BE EXTREMELY HOT IF THE ENGINE HAS BEEN RUNNING. DO NOT START ENGINE WITH ANY LOOSE OR DISCONNECTED HOSES. DO NOT ALLOW HOSES OR POWER STEERING FLUID TO TOUCH HOT EXHAUST MANI FOLD OR CATALYST. 4. Locate the power steering cooler attached to the crossmember support plate. Slide back the clamp and disconnect one of the two power steering return hoses at the power steering oil cooler and drain fluid in an appropriate container.
5. Have the helper turn the steering wheel back and forth quickly several times to force as much fluid as possible from the steering gear.
6. Reconnect the hose at the oil cooler using the original clamp.
7. Lower vehicle so the vehicle tires are not contacting the ground. 9. For proper fluid fill and bleeding air from the power steering system:

a. Fill the power steering reservoir to the top of the fill range using Mopar power steering fluid (ATF+4) p/n 05013458AA.

b. With the engine OFF and the vehicles tires off the ground, slowly turn the steering wheel back and forth (lock to lock) slowly 20 times to force fluid into the steering gear.

c. Fill the power steering reservoir to the top of the fill range.

d. Start engine and let run for a few seconds, then turn oft engine.

e. Check fluid level and add if necessary.

f. Start engine, and slowly turn the steering wheel lightly contacting the left and right stops.

g. Stop the engine and check fluid level. Add fluid if necessary.

h. Lower vehicle, start engine and slowly turn steering wheel lock-to-lock.

I. Stop engine and check fluid level. Add fluid if necessary.

j. If fluid is extremely foamy, allow vehicle to stabilize a few minutes, then repeat steps "i" and "j" until the fluid level remains constant after running the engine and turning the steering wheel from lock to lock.

10. Inform the vehicle owner/operator that a steering vibration may be noted for a few hundred miles until the air is completely removed from the steering system. This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya

When power steering hose replacement is required, follow these steps:

1. With the engine stopped, remove the return hose at the power steering gear, and allow the fluid to drain from this hose into a drain pan. On some cars, the vehicle must be lifted on a hoist to replace the power steering hoses.
2. Loosen and remove all hose fittings from the pump and steering gear.
3. Remove all hose-to-chassis clips.
4. Remove the hoses from the chassis, and cap the pump and steering fittings.
5. If O-rings are used on the hose ends, install new O-rings. TRW steering gear cylinder lines have gaskets that are serviced as a unit. The old gasket must be pried out of the fittings in the housing before the new lines and gaskets are installed. Lubricate O-rings with power steering fluid.
6. Reverse steps 1 through 4 to install the power steering hoses. Tighten all fittings to the manufacturer's specified torque. Be sure all hose-to-chassis clips are in place. Do not position hoses where they rub on other components.
7. Fill the pump reservoir to the full mark with the manufacturer's recommended fluid. Bleed air from the power steering system. Check the fluid level in the reservoir and add fluid as required.

trans fluid and p/s fluid same thing thats fine. Did you fill fluid first before starting vehicle? These pumps burn up easily if run dry.