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RWD - do I need a new PS rack ? 1998 s90

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do I need a new PS rack ? 1998 s90 S90-V90

1998 S90

After noticing some front end "wobble" at certain speeds or road bumps/potholes, I jacked each front wheel up separately and grabbed the tire at 3&9 o'clock, and found some play. The tie rod would move a little each way as I performed the tire wiggle test.
Same symptoms on each wheel, with the other front wheel on the ground.
I couldn't see the PS rack assembly, as the belly pan was still in place.
If I grabbed the tire at 12&6, there was no free play.

Could it be:
- steering rack mounting bolts loose?
- defective PS rack assembly?
- something else?

Thanks





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do I need a new PS rack ? 1998 s90 S90-V90

thanks for the suggestions

turned out to be inner tie rods, lower control arm bushings, and a worn steering rack.

bought a rebuilt rack from Detroit Axle, but they shippped it without the inner tie rods.
also bought both control arms - and ball joints, given the mileage on the car since the last time they were replaced.





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do I need a new PS rack ? 1998 s90 S90-V90

Good advice below. Tie rods are a prime suspect and much cheaper than a rebuilt rack. You can nurse a slightly leaking rack along by fluid top-ups. But if your region has a safety inspection program, it will fail.

I replaced the rack for just that reason on my (long gone) S90. The first rack - from a frequently mentioned supplier here - was an Atlantic Automotive Engineering unit and leaked like a sieve. I returned it, got my money back and bought a Jorgen rebuild direct from them. No problem after that. www.jorgenauto.com
--
Son's XC70, my 83 244DL, 89 745 (Chev LT-1 V8), and XC60. Also '77 MGB and four old motorcycles. Long gone: 1981 244, 1994 940 and 1998 S90.





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do I need a new PS rack ? 1998 s90 S90-V90

Yes, have someone hold your steering wheel first then do the test. Sounds like it could be outer or inner tie rods. Let’s start there. Did you check the outer tie rods for torn boots and/or play at the joint? Is there any harshness going over sharp bumps? That would indicate bad outer tie rods.

Check the inner tie rods for play too. Also look for a torn boot.

If fluid is leaking through the inner tie rod boots the rack is leaking but it can be saved if not too bad by flushing and replacing the fluid.

Have you checked your actual ball joints and struts/strut mounts yet?


--
Will I buy another Volvo??? We'll see....





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do I need a new PS rack ? 1998 s90 S90-V90

Firstly have someone hold the steering wheel steady while you're doing the tyre shaking test. Sometimes the steering wheel shakes a bit while doing the test and I've been tricked many times into thinking there's some play at the rack.

Its possible that your inner tie rods (right and left) joints are worn. These are bolted to the steering rack itself. You'd have to take out the steering boots to be able to see them. With the boots out (but still hanging on the inner tie rod shafts) shake the tyres again to see the loose joints.

And if you see oil dripping from the boots then the rack assembly itself should be replaced or rebuilt. If the boots are dry only the inner tie rods should be replaced.


Regards,
Amarin.





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