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Discussion Starter #1 (Edited)
Dear Saab owners,

I would like to share my issue with you in case some someone had the same issue and found a solution.

I own a SAAB 9000 CD 2.3T MY 1995. I got it from my father which he bought it new 24 years ago. The car now has around 270,000 km (168,000 miles) and the engine still goes great.
Six months ago I decided to improve the handling/steering so I bought lowering springs and strut brace from Maptun. I also replaced the shocks and struts with new ones (OEM) and all the bushings on the steering arms and front/back sway bars.

Then I realized the car started to vibrate a lot during acceleration. I felt vibration on the floor, the seat and on the steering wheel. Some Saab owners from other forums said the lowering caused this as the position of the drive axles changed and recommended to replace the inner cups. I followed their advise and ordered left & right inner cups - which they were quite expensive as they were genuine Saab- I also found from ebay new complete drive axles made by OPC at a very low price.

So I took the parts and ask the mechanic to replace the old with these. It seems that the new drive axles were not for my model as they couldn't fit. The mechanic told me that the old tripod bearings had a little play but still OK, so he re-used them with new grease.

The result

I still have vibrations at acceleration, and now I have a strange noise after ~110km/h especially when I have passengers. The noise is like there is a helicopter above me all the time. As mentioned this noise appears after ~110km/h at any gear at the slightest step on the throttle pedal. I can feel that noise on the steering wheel also.

I also have vibrations on the steering wheel when I press the brake which I believe it is coming from the discs, although they are 15,000 km old (PAGID). The wheel were already checked for balancing

My questions

Should I replace the tripods with new ones (OEM)?
Should I replace the outer CV joints with new from SKF? What are the symptoms of a failing
Should I replace the front wheel bearings with new from SKF as well? They were never replaced and maybe is related to some noises and vibrations


Thank you in advance for your answers
 

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There's no real standard for tripod bearing size.

Any time you mix cups and shafts you run the risk of a mismatch and the slightest bit of play can result in what you describe.

Use the axles whole if you can.

Also, the stock struts were designed for the stock ride height. Rule of thumb is an inch drop is probably fine. How far have you lowered it?
 

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Discussion Starter #3
There's no real standard for tripod bearing size.

Any time you mix cups and shafts you run the risk of a mismatch and the slightest bit of play can result in what you describe.

Use the axles whole if you can.

Also, the stock struts were designed for the stock ride height. Rule of thumb is an inch drop is probably fine. How far have you lowered it?
Thank you for your reply,

I don’t mix shafts and cups, I only replace the components with new ( I don’t buy used parts) and if possible OEM.

There is no P/N for my car version for the complete shaft. SKF has VKJC 1418 for Saab 9000 with B234L but for models until 12/93

The lowering was only 20mm (less than an inch)

Awaiting for your comments


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