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Discussion Starter · #1 ·
Hi All,

I did a quick search of the forum for related problems, but I didn't find anything that sounded similar...

Anyway, it's a 97 900s, 255k km, and I recently had it tuned up a saab-specific garage. Among several other repairs, including a cooling overhaul, I had the front brakes completely replaced.

About 2 weeks after the work was done, I noticed that there's a pretty harsh grinding sound coming from either the steering column, or somewhere else - I can only narrow it down to the front left of the car. I've also noticed that the sound is more prominent in hot weather, or after I've been driving it for a while.

The guy who did the brakes said to expect some odd noises as the get worn in, but it doesn't seem like every slight touch of the steering wheel should cause this grinding sound, which it does.

Any ideas? I realize it could probably be a dozen different things, but is there one thing that's more common than the others?

I appreciate any help on this, before I drop another $100 to get it diagnosed. Thanks!
 

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Take it straight back to the guy and have him fix whatever he damaged.

Brakes don't make any noise "bedding in"...he is woofin'!!

Although, if it only started two weeks later, it could be something completely different!!
 

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Discussion Starter · #3 ·
Take it straight back to the guy and have him fix whatever he damaged.

Brakes don't make any noise "bedding in"...he is woofin'!!

Although, if it only started two weeks later, it could be something completely different!!

Yeah, I actually already took it back when the Check Engine light came on the day after I got it back - turned out to be the spark plugs mis-firing or something... I thought they may have caught that when they had my car for 3 days.

As for the grinding, it's been too long since the repairs (over a month) to have them look at it free of charge, and like you said, it could be and likely is something completely different.
 

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Does it only do it when the wheels are rolling? Or does it happen when turning the wheel with the car parked idling? Just trying to rule out steering rack/pump components. I've never had a steering rack go bad so I have no idea if it would even make a grinding noise...

Anyway, it could be a sticking caliper/slide, or possibly a failing wheel bearing. However, a sticking caliper would not really be dependent on turning the wheel. A bad wheel bearing might get louder when turning (from the increased thrust force) but it would probably make a noticable noise whenever the car is moving. Wish I could be more specific, but its tough based on the rather vague description of the symptoms.

If the mechanic who did the brakes takes any pride in his work, he will at least take a look at it and diagnose it at no cost. He was the last one to work on it (recently) so either he screwed something up, or he missed something he should have noticed the first time around.
 

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Discussion Starter · #5 ·
Does it only do it when the wheels are rolling? Or does it happen when turning the wheel with the car parked idling? Just trying to rule out steering rack/pump components. I've never had a steering rack go bad so I have no idea if it would even make a grinding noise...

Anyway, it could be a sticking caliper/slide, or possibly a failing wheel bearing. However, a sticking caliper would not really be dependent on turning the wheel. A bad wheel bearing might get louder when turning (from the increased thrust force) but it would probably make a noticable noise whenever the car is moving.

If the mechanic who did the brakes takes any pride in his work, he will at least take a look at it and diagnose it at no cost. He was the last one to work on it (recently) so either he screwed something up, or he missed something he should have noticed the first time around.

Thanks for the reply - it DOES grind while motionless. The guy I took it to is supposed to be a pretty good and well-known Saab mechanic (who I found on here), so maybe I will see if he'll take a look at it again...
 

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Hello there.

Was your problem ever diagnosed? I'm experiencing the exact same thing under the exact same circumstances.

...any advice?
thanks.
 

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If the car makes a noise when not moving it sounds to me like a steering rack, either low fluid (hopefully) or rack seals. Its easyish to have a mechanic replace the rack with a wreckers unit, then keep an eye on the fluid level as its from memory a specialised type.

Good luck M.
 

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If the car makes a noise when not moving it sounds to me like a steering rack, either low fluid (hopefully) or rack seals. Its easyish to have a mechanic replace the rack with a wreckers unit, then keep an eye on the fluid level as its from memory a specialised type.

Good luck M.
Thanks!
I had suspected the fluid thing so I checked, added, and verified as appropriate (last week). The noise persists and the problem doesn't appear to have been affected at all by what I did.

If the car will indeed need the rack replaced I suspect that I'd need a car lift, yes? (I favor home-based remedies when possible. I'm a motorcycle mechanic with a pretty well outfitted (motorcycle-oriented) shop. I don't, however, have anything capable of lifting the car.)

thanks again.
 

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Discussion Starter · #9 ·
Hello there.

Was your problem ever diagnosed? I'm experiencing the exact same thing under the exact same circumstances.

...any advice?
thanks.
I've intended to sell/scrap my car for a while now, so I never got it fixed (or even looked at)... The grinding comes and goes, but hasn't created any bigger problems...at least none that I'm aware of.
 

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I've intended to sell/scrap my car for a while now, so I never got it fixed (or even looked at)... The grinding comes and goes, but hasn't created any bigger problems...at least none that I'm aware of.
This, I think, is a good economic answer to the "grinding"..
Monitor the situation, assure that breakdowns are nearly out of the equasion..
This might be worn out strut mount bearings....I can understand the $100 diagnosis - disconnecting all connections on the struts and then listening to sounds when the strut is turned freely, with no load..
 

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I'm a little surprised that nobody has suggested looking at the half shaft. I have yet to drive my saab so I am not an experienced saab owner, but every other vehicle I ever owned, when a grinding sound appeared from the wheel area the half shaft (cv joint) was always suspect and usually the problem.
 

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If the car makes a noise when not moving it sounds to me like a steering rack, either low fluid (hopefully) or rack seals. Its easyish to have a mechanic replace the rack with a wreckers unit, then keep an eye on the fluid level as its from memory a specialised type.

Good luck M.

I have the same problem Fluid Reservoir full.NO Leaking .Driving straight Car run pretty good with no noise .Making hard turn no problem.
Car Park and playing with the Steering Column moving Left to Right you could heard knocking
 

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I had this once, more profound during summers, I just changed my ps fluid and its gotten better. my theory is that the fluid has deteriorated to the point it cant take high heat anymore.
 

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Strut Bearings if the car is not moving and you only hear it on one side. I have that. Not cheap to replace. I checked with the mechanic and you should be just able to ask him about this and he should be able to give you an answer without a fee. I don't think it's related to the repair. Will need to get done at some time when it gets worse. I heard the noise right away and it occurred after a pothole full road which is perfect to deteriorate the old bearings.
 
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