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PYM35
V4 Beginner

France
97 Posts

Posted - 31 Aug 2020 :  10:54:12 Show Profile Reply with Quote
Hi,
Since I bought my SAAB, I've been searching all the different sources of noise to make them dissapear. I had success till now : I can here an important "clonking" at the right front wheel. Investigation shows a drive shaft with an important play.
What would be your suggestion ? Change the complete part of only a component ?
Thanks !

Woody
V4 Guru

United Kingdom
2758 Posts

Posted - 31 Aug 2020 :  11:14:07 Show Profile Reply with Quote
How would you describe the play?
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PYM35
V4 Beginner

France
97 Posts

Posted - 31 Aug 2020 :  11:44:41 Show Profile Reply with Quote
The play goes from gear box to wheel when you hold firmly the drive shaft with your hand.
There is no noise when you make the drive shaft move like this, however, when driving, ou hear clonks and "tac-tac-tac" noises even when you drive on a straight line.
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christophe
V4 Fanatic

France
224 Posts

Posted - 31 Aug 2020 :  12:26:07 Show Profile Reply with Quote
When driven on a straight line, driveshafts don't make noise usually. I think I would put the front end on jack stands with the engine runninng and use a mechanic's stethoscope to ascertain the source of the noise.
Nice day to all.
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Derek
V4 Guru

United Kingdom
2187 Posts

Posted - 01 Sep 2020 :  12:11:41 Show Profile Reply with Quote
Noisy joints usually much more noticeable as you approach full lock.
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Woody
V4 Guru

United Kingdom
2758 Posts

Posted - 02 Sep 2020 :  18:11:18 Show Profile Reply with Quote
The only time I have had noises from the driveshaft was when a needle bearing cup had slipped off whilst reconnecting shafts to gearbox coupling. It chattered as the T drive was missing one cup and could move inside the housing. You would however be able to feel movement of the driveshaft in the joint.
As already advised the CV joints don't normally make noises in a straight line. There should not be any play end to end.
Is the movement in the shaft itself and can you assess how much movement? This would suggest that the circlip which retains the splined end of the shaft into the CV joint has failed or is missing.
I would check that the brake caliper is firmly attached to the knuckle and that there isn't any slop between the halves and that the wheel cylinder retaining spring is in place. Also check that the brake pads are seated correctly.
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PYM35
V4 Beginner

France
97 Posts

Posted - 03 Sep 2020 :  21:01:21 Show Profile Reply with Quote
Hi,
I will surely investigate next time I put the SAAB out of the garage. One more thing to be noticed : when I brake at low speed at traffic light approach, there's a "clonk" that I feel in the whole car and particularly at my right foot level. I didn't really search where it comes from so far as everything seems to be ok. Any ideas ?
Cheers !
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OWEN
V4 Fanatic

United Kingdom
318 Posts

Posted - 03 Sep 2020 :  22:39:35 Show Profile Reply with Quote
The 'clonk' can be movement of the brake pads. Each time they 'clonk' they damage their metal parts and the metal of the caliper. Eventually this can lead to them locking. Happened to me. Examine the 'steps' at the tops of the brake pads for wear and the calipers for corresponding wear.
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 04 Sep 2020 :  08:35:09 Show Profile Reply with Quote
I would also say look at the brakes first. See here for pointers: http://www.saab-v4.co.uk/speedball/topic.asp?topic_id=34284

www.saabv4.com
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PYM35
V4 Beginner

France
97 Posts

Posted - 17 Sep 2020 :  15:38:25 Show Profile Reply with Quote
Hi,

I just took off the caliper from the right front side. Surprise :

https://ibb.co/jwy1dVX

Is it normal that the brake pads are worn out very irregularly ?
I think that the support bracket was wrongly fitted as, for me, steady pin and spring on the caliper body was not strongly fitted, but only the edge of the caliper was in contact. I don't know if it's possible but does somebody has a picture of the correct mounting here ?
Issue is that I can't figure out how to re-assemble correctly the caliper. I think there's something wrong here. And I'm quite convinced that the clonking was due to a pad that was loose.

Please help !!
More pictures (sorry, not the best, obviously) :

https://ibb.co/YBC2nNs
https://ibb.co/FDQMZ2B
https://ibb.co/C0Ypp95

Edited by - PYM35 on 17 Sep 2020 16:10:46
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PYM35
V4 Beginner

France
97 Posts

Posted - 17 Sep 2020 :  16:25:43 Show Profile Reply with Quote
Normaly, the steady pin goes here => https://ibb.co/JBWkQd7
In the "U" shaped area, no ?

From Melle's message here : http://www.saab-v4.co.uk/speedball/topic.asp?TOPIC_ID=34284&whichpage=3

Edited by - PYM35 on 17 Sep 2020 16:28:47
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 17 Sep 2020 :  17:00:22 Show Profile Reply with Quote
Many 95/96's have clonking brakes, it's something I've learnt to live with. At first sight I see nothing obviously wrong with your caliper, only maybe a bit of wear on the sliding surface on the arm that goes under the top pin. The brake pads are supposed to be wedge-shaped, so nothing wrong there either and the "steps" on the pads look to be in good shape too. The gold plating tells me they've probably been overhauled at some point by VdT/ Van der Tang, a company that has a reputation for doing sub-standard work, so worth checking them over anyway.

www.saabv4.com
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PYM35
V4 Beginner

France
97 Posts

Posted - 17 Sep 2020 :  18:30:38 Show Profile Reply with Quote
Thanks Melle.
So I am in the same situation as before. I will re assemble the caliper and see if there's any change.
Clonking is only on the right side, and it's quite an important one.
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melle
V4 Guru

United Kingdom
3830 Posts

Posted - 17 Sep 2020 :  19:20:52 Show Profile Reply with Quote
Do your brake pads have any damage like this? You can clearly see the "primary" step has worn away here, the second one is there to prevent it slipping through if things get really bad.



www.saabv4.com
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PYM35
V4 Beginner

France
97 Posts

Posted - 17 Sep 2020 :  19:44:40 Show Profile Reply with Quote
I will check that this week-end and let you know.
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PYM35
V4 Beginner

France
97 Posts

Posted - 17 Sep 2020 :  20:05:11 Show Profile Reply with Quote
Melle, I can't find the link you gave us on the bay to buy ignition wires that you find very good. Can you share it please ? Thanks and Best Regards.
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