1991 Subaru Legacy Logo
Anonymous Posted on Apr 04, 2013

My 1991 subaru 2.5 legacy boxer sounds like the power steering is out of oil when you start car in th mornings, but ok once car has been run ,

Can the power steering oil run back to reservoir emptying the pump over night causing it to whine loudly in the morning for a few seconds

1 Answer

Todd Arndt

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  • Subaru Master 2,044 Answers
  • Posted on Apr 04, 2013
Todd Arndt
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Your Pump is getting worn, as it expands the noise goes away. You can try and Empty the Power Steering Pump of its fluid and put new in and there is a chance it will go away but if it does not, you are looking at replacing the Pump.

Preventive Maintenance goes a long way, the same thing with the brakes, Engine, Transmission, ect.. They all require changing the fluid to prolong the life of the components.

  • Anonymous Apr 04, 2013

    I did not have this problem before changing the steering rack a month ago

  • Todd Arndt
    Todd Arndt Apr 04, 2013

    When did the problem start? Did it start immediately after installation? Has it been getting worse over time, Immediately after? ANY ADDITIONAL INFORMATION could help me to help you. I have been an ASE Mechanic since 1979...

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5 Related Answers

Anonymous

  • 2071 Answers
  • Posted on Jul 22, 2008

SOURCE: Car won't start and floods

Locate your vehicle's computer connector (ALDL), most are on the lower driver's side. In some vehicles you might need to look around a little, on the passenger's side, and around the center console under a plastic cover. For more information, check your owner's manual. This device gathers information that was stored in your carsECM. This information ortrouble code can inform you the system or sensor that is malfunctioning. Look up the code in our diagnostic trouble code chart. After repairs have been made use the code scanner to clear trouble codes and recheck system. B. Testing Fuel Pressure. Test for proper fuel pressure with a fuel pressure gauge. Connect the gauge to the test port on the fuel rail. Fuel pressure reading's very depending on the system your in our vehicle, but most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port injection systems are between 40 psi and 55 psi. To find out your vehicle system fuel pressure consult arepair manual. If little fuel pressure is present the fuel pump needs to be replaced.

C. Test for Weak Ignition Spark
. A weak ignition system can be a sign of a failing ignition component. Remove spark plug wire and insert an extra spark plug into end of wire, attach spark plug to engine ground then crank engine. You should observe blue spark between spark plug gap. If a yellow spark is observed, your ignition coil is weak and needs to be replaced. If your spark is not consistent you may need a ignition module.

D. Inspect the Main ECM Relay
. If the ECM relay fails it will shut down the engine management system. This relay carries high amperage and is prone to failure. To test install new relay then test drive to recheck symptoms.

E. Testing the Ignition Switch
. This test requires a electronic test light. When vehicle dies test the power side (+) of your ignition coil with the key on, the test light should illuminate. If your test light is not lighting suspect your ignition switch or ignition relay. To trouble shoot this condition you will needwiring schematic for your car.

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Anonymous

  • 5158 Answers
  • Posted on Feb 05, 2009

SOURCE: Subaru Outback - '03 boxer 2.5L engine sounds like a diesel

heavier oil if you are not in a cold climate. but before you do that have the oil pressure checked. We used to use a can of STP every once in a while on a motor in a dodge we had... nothing wrong with it... was just noisy.

Robert

Anonymous

  • 255 Answers
  • Posted on Apr 14, 2009

SOURCE: cold start

possible cold start valve bad

motor1258

Mike Butler

  • 6674 Answers
  • Posted on May 08, 2009

SOURCE: 1991 subaru legacy. The car would not start. I

You should have a fuse & a relay. Check # 11 fuse it should be 15 amp.& may be for your fuel pump. Do you have owners manual by chance, or does cover of fuses have label?

germcelchar

Charles McElchar

  • 389 Answers
  • Posted on Oct 16, 2009

SOURCE: how do i bleed my power steering rack on subaru legacy rs turbo

A power steering dosent need bleeding. If you replaced it a week ago and was fine until now then it's not an air problem. Power steering fluid is pumped through the system even when the steering is not being used. Definatly not an airlock problem. Cheer's

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