Question about 1990 Nissan 300ZX

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Power steering well wouldnt my steering be easier but notchie when my car is on and when it is turned off it would be harder but still notchie if the pump was workin so do you think the pump is bad because it turns exactly the same when the car is on and offi think it would be easier to turn when the car is on if the pump was working thanks

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Gotcha - if the car was on the ground, with the wheels down and supporting the weight of the car, yes the steering would be easier with the car on. I'd think that with the wheels off the ground, the difference would be quite a bit less, although it still may be noticeable. In the several years that I was active in the Z scene, it was pretty rare to hear of a power steering pump failure, although it did happen. What people had more trouble with, especially on the turbo cars, was the high-pressure power steering hose (from the reservoir down) going bad on them. That's worth looking at as well. Try dropping the car back down though and see if there's a difference in effort with the car on vs off with the wheels down. Seems like that'd be a more dramatic difference when everything is working right, so you'd have a better chance to tell with the car down.

Posted on Jul 29, 2008


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It could be the rack bushings - take a look and see if they're worn (it shouldn't be hard to see them with the car up in the air). If they are, they won't anchor the rack as they should, so some of the notchiness could be play in the bushings as the rack itself shifts while you turn the wheel.

Jul 29, 2008 | 1990 Nissan 300ZX

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