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How to determine condition of power steering pump

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If it isn't making noise and and the steering is easy, then the pump is fine.

Posted on Feb 08, 2014

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My van is having a hard time turning, would this be the power steering pump going out and if so how can I fix my 1998 Mercury villager


It could be or the steering rack . The power steering system uses a CII type power steering pump (3A674) and a power rack and pinion steering gear.

If you never replaced either of these parts before suggest you take to a ASE certified repair shop .
Pump Flow and Pressure Tests Before performing pump flow and pressure test, complete the following checks for conditions which could cause loss of power assist. Take corrective action if necessary.
  1. Check power steering oil reservoir (3A697) for proper fluid level.
  1. Check tires for correct air pressure.
  1. Check drive belt (8620) for proper tension.
  1. Check power steering pump (3A674) for correct model and vehicle application.
  1. Check for correct size power steering pump pulleys (3A733) on power steering pump and engine.
  1. Check entire system for damage. Replace parts, if necessary.
If the above items are correct, or have been corrected, and the loss of assist still exists, test power steering pump flow and pressure to determine whether the trouble is in the power steering pump , power rack and pinion steering gear or hoses.

Oct 20, 2015 | Mercury Cars & Trucks

1 Answer

Can electric assisted power steering be adjusted ?


power steering is adjusted by the pressure settings in the pump. Regardless of the conditions of your hands, there should be assistance from the pump .I would suggest that you have it checked at an accredited steering shop as the power steering pump may be faulty

Dec 19, 2014 | 2006 Pontiac Torrent

1 Answer

Power steering fluid leaking on 2002 pontiac grand prix


OK you know the problem but is it something as simple as replacing the Power steering hose or as complicated as also needing a new power steering pump also? Look at where its leaking to determine what needs replacing. Remember it just takes a little time to determine where its leaking. If you find that its not the hose leaking but its the power steering pump then follow these easy steps and save $100s doing it yourself:
1 Remove the negative battery cable with a wrench and place it aside. Remove the upper strut housing tie bar if necessary for access. Remove the power steering serpentine drive belt and electrical plug on the TFE off as applicable. Remove the lower bolt from the mounting bracket using a socket and ratchet if necessary for access. Take off the inlet and outlet hoses from the power steering pump. Remove the reservoir hose only on the supercharged engine. You will need a flat-head screwdriver for this task.
2 Place the power steering pump pulley so the bolts can be accessed through the hole in it. Remove the mounting bolts, using a socket and ratchet, through the hole in the pulley. Take the power-steering assembly out from the bracket. If necessary transfer the pulley to the new pump with a pulley puller.
3 Replace the power steering pulley assembly before you install the pump using the pulley-install tool from your kit. Start the power steering inlet hose connection to the pump by hand. Replace the power steering pump assembly to the engine. Replace the lower bolt first, making sure the hose and heater pipe have enough clearance so they do not touch. If the two rub together they will make noise after the installation is finished. Replace the outlet hose to the pump, directing the hose under the engine harness and the heater hose. If the engine is supercharged it will be necessary to connect the hose from the reservoir.
4 Torque the power steering gear inlet hose to 20 foot-pounds and the hose clamp at the pump to 15 inch-pounds. Torque the pump mounting bolts to 20 foot-pounds. If equipped with a TFE pump, attach the connection. Replace the power steering drive belt or serpentine belt if you removed either. Replace the upper strut tie bar and torque the nuts to 18 foot-pounds. Replace the negative battery cable and fill the power steering reservoir with fluid. Bleed the steering system by starting the engine and turning the steering wheel right and left until all the air is out.

Apr 20, 2014 | 2002 Pontiac Grand Prix

1 Answer

Power steering impala


check that the drive belt is in good condition and tensioned properly. check fluid level in reservoir. have a pressure test done on the system to determine it the pump is working.

Mar 19, 2014 | 2002 Chevrolet Impala

1 Answer

Hydraulic fan does not go any faster than basic 500 rpm. Overheats after driven on highway and then in stop n go traffic. Have put 12v to the two pins (with colored wires) in the plug and the fan runs...


The hydraulic fan runs off of pressure from the power steering unit. I would recommend that you check the fluid level on your power steering pump. It is more common for the power steering pump to give issues than for the fan to go out. That being said, if you can notice any whining noise, lag, or lack of assist when turning the steering wheel, it is either the fluid level, or the power steering pump. The factory fill power steering fluid for all 1999-2004 Grand Cherokees is a unique fluid, MS5931. ATF+4 (MS9602) should not be mixed or used as a "topping off" fluid on the Grand Cherokee WJ. All WJ models should be serviced using ONLY the special MS5931 fluid. ATF+4 is NOT an approved Power Steering Fluid and should never be used under any circumstances. Note that all fluids will darken in color with usage and fluid color is no longer an indication of fluid condition.

I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

Oct 01, 2013 | 2004 Jeep Grand Cherokee

1 Answer

Olds 307 Belt Diagram


307's have a unusual routing, it's easy to get confused.

From back to front:
1) Crank - Water Pump - Air Conditioning
2) Crank - Power Steering - Water Pump
3) There are two versions, depending on how many grooves the power steering pump has:
(1-groove P/S):Water Pump - Alternator
(2-groove P/S):Crank - Power steering - Alternator - Water pump
4) Crank - Air Pump

May 14, 2012 | Cars & Trucks

1 Answer

I WAS DRIVING AND THE STERING WENT OUT IS THIS MAJOR


Yes, I would say if the power steering doesn't work properly, it's a major problem. Determine if it's the rack and pinion or steering gear or the pump. Check the power steering pump's level of power steering fluid and the belt tension.

Jan 29, 2011 | 1991 Chevrolet Camaro

1 Answer

Replace power steering pump.


  1. Disconnect the negative battery cable.
  2. If necessary, remove the air cleaner duct and the air cleaner.
  3. Remove the drive belt from the air conditioning compressor, if equipped.
  4. Loosen power steering pump belt adjustment as follows:
    1. Loosen the pivot and mounting bolts.
    2. Loosen the idler pulley locknut and turn the adjusting nut counterclockwise to remove the power steering belt.
  5. Loosen the power steering hoses at the pump and remove the bolts holding the power steering pump to the bracket.
  6. Disconnect and plug the power steering hoses and remove the pump from the vehicle.
To install:
  1. Using new O-rings, connect the power steering hoses to the steering pump.
  2. Install the power steering pump and secure it with its mounting bolts. Tighten the front and rear mounting bolts to specifications.
  3. Install the remaining components in the reverse order from which they were removed.
  4. Connect the negative battery cable.
  5. Fill the power steering system, start the engine and turn the steering wheel from side-to-side to bleed air from system

Feb 14, 2010 | 1997 Nissan Maxima

1 Answer

Can low steering fluid cause mechanical problems


Problems associated with low power steering fluid…

Hard Vehicle Steering
A low power steering fluid level can often times cause a vehicle's steering to become hard and labored. Adequate amounts of power steering fluid are necessary to enable a vehicle's power steering system to function and operate at optimum levels. A lack of power steering fluid in a vehicle's power steering system reduces the amount of hydraulic fluid pressure necessary to efficiently operating the various parts of the entire power steering system. Power steering fluid supplies the fluid force needed to operate the power steering gears and to enable power steering gearbox operation. Low power steering fluid levels reduce this hydraulic pressure, which commonly results in hard vehicle steering.

Pump Noise
It is very common for a low power steering fluid level to cause significant power steering pump noise. An adequate amount of power steering fluid is required to ensure the proper function and longevity of a power steering pump unit, which is a belt-driven pump responsible for housing and circulating power steering pump fluid. A low level of power steering fluid results in increased power steering pump friction, heat, and wear, all of which can significantly reduce the operational life of the power steering pump while at the same time cause excessive power steering pump noise.

Fluid Boiling
Many times a low power steering fluid level can result in excessive heating of power steering fluid, a condition that can seriously degrade the fluid and cause it to boil. A low power steering fluid level results in less available fluid to both lubricate and cool a power steering pump unit. A lack of power steering pump lubrication and cooling leads to excessive heat being generated within the power steering pump unit itself, a condition that translates into the available level of power steering fluid becoming super-heated and degraded. When this happens it is common for the power steering fluid to boil and lose all of its lubricating and heat-reducing capabilities.

Gearbox Wear
The power steering gearbox is a set of gears within a vehicle's power steering system designed to facilitate movement of a vehicle's front wheels. The power steering gearbox is connected to the power steering pump by hydraulic fluid lines that deliver a constant supply of power steering fluid to the power steering gearbox. A low power steering fluid level, especially a chronic and severe low power steering fluid level, can lead to increased friction and wear within the power steering gearbox assembly, a condition that can significantly shorten the operational life of the power steering gearbox and negatively affect its operation

Nov 26, 2009 | 2003 Pontiac Grand Am

1 Answer

I have a jeep grand cherokee and the power steering keeps going stiff is it the power steering pump or steering box


If it only goes stiff part of the time, the box is probably OK.

Before considering major surgery:
  • check the power steering fluid level.
  • condition of the fluid
  • condition and tension on the belts
  • check for low or uneven tire pressure
  • check steering linkages for damage (did someone borrow the car recently?)
If none of these check out, then consider replacing the pump.

Mike

Jul 13, 2008 | 1995 Jeep Grand Cherokee

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