Question about 1992 Nissan 300ZX

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Air in the power steering filter

I did a little troubleshooting yesterday... i opened the reservior for the power steering fluid. i noticed a bunch of air in the reservior with the filter. i left the cap off so the air bubbles would go away... what would cause air bubbles in my reservior?

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  • sabrina_fran Feb 11, 2009

    You are awesome thanks!!!! Your solution worked

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The power steering fluid will aerate (churn and make bubbles) if the power steering fluid is overfull or underfilled.

If the steering is making a binding sensation, causing excess motor drag, then it's probably low.

Just go to auto parts store and buy their recommended fluid. It's about $3/quart usually. Some auto makers require very specific fluid for their cars, but for a Nissan, it should be somewhat standard.

There should be a dipstick that is marked with the proper fluid level on your power steering pump. It'll be marked HOT and COLD, which of course corresponds with when you're checking the fluid. If you haven't driven the car and it's morning time, check the level with COLD. If the car has been driven and is warmed up, then check it against HOT.

Posted on Feb 10, 2009

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