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Nov 12, 2011 20:00:13 GMT
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O.K thought I'd ask on here incase someone has a new suggestion or has experienced the same problem.
I have a wobble/vibration on my front end when I go above 40mph or turn LEFT only.
I thought it might have been a cv joint so replaced the whole n/s driveshaft, problem not solved.
Just put 4 brand new alloys, which have all been balanced so cant be a wheel/tyre problem.
It could be a diff bush, but want to see if anybody has anymore suggestions before the gearbox comes off. But usually this causes oil leakage and mines bone dry
Cheers
Dave
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Nov 12, 2011 20:17:13 GMT
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what sort of car is it?
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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Nov 12, 2011 20:31:42 GMT
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Saab 9-3 2ltr turbo
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Nov 12, 2011 20:40:40 GMT
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Knackered bush on the N/S lower wishbone then. (as a guess...)
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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Nov 15, 2011 21:37:30 GMT
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Thanks for the reply.
Would you say its more likely something like a bush or ball joint than a diff bush then?
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Nov 15, 2011 22:42:02 GMT
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If by diff bush you mean gearbox mounting i would say its unlikley. When they go you tend to a clonk when the power is taken up and when changing gear.
For a vibration you need to be looking further out towards the wheel. Ball joints or top mounts could also be to blame.
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R.S. Autotech. Servicing/Repairs/Diagnostics.
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bl1300
Posted a lot
Posts: 1,678
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Nov 16, 2011 16:40:52 GMT
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Id be looking at ball joints and suspension bushes personally. My first thought when reading it was wheel balance but you say thats fine. Also sounds obvious but are your tyres inflated to the correct pressure.
To test your ball joints lift the wheel and grasp it top to bottom and try to rock it. You shouldn't have much play. If it moves grasp each ball join in your hand and rock the wheel again you should be able to feel the play in the offending joint.
If your worried about Track rod ends then its the same procedure only holding the the wheel side to side rather than top to bottom. If you do that you might as well check the bearing as well spin the wheel it should spin smoothly without undue noise.
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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Nov 16, 2011 16:47:49 GMT
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Thanks for the info mate, I'll give it a try this weekend and let you know how I get on
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Nov 16, 2011 19:24:07 GMT
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If by diff bush you mean gearbox mounting I would say its unlikley. When they go you tend to a clonk when the power is taken up and when changing gear. For a vibration you need to be looking further out towards the wheel. Ball joints or top mounts could also be to blame. No I mean the actual diff bush in the gearbox mate where the input shaft goes into. |
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bl1300
Posted a lot
Posts: 1,678
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Nov 16, 2011 19:30:49 GMT
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If its on the input side of the diff I cant see why it would be more apparent when turning left as the input shaft should be turning at the same speed regardless. If what youre describing is what I think it is id wager that is pretty unlikely to be your culprit
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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Nov 16, 2011 19:45:08 GMT
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If by diff bush you mean gearbox mounting I would say its unlikley. When they go you tend to a clonk when the power is taken up and when changing gear. For a vibration you need to be looking further out towards the wheel. Ball joints or top mounts could also be to blame. No I mean the actual diff bush in the gearbox mate where the input shaft goes into. I would say its unlikley. What sort of vibration is it? You say its on the front but can you feel it through the steering wheel or does it come through the floor. |
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R.S. Autotech. Servicing/Repairs/Diagnostics.
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Nov 16, 2011 21:09:37 GMT
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The reason why I suggested the diff bush is because there is apparently "excessive" play when the driveshafts are connected.
The wobble vibrates mainly through the floor, no vibration at all when I turn right or at low speeds, only when I go over say 40 and turn left.
I thought if it was a diff bush then surely there would be a wobble/vibration at any speeds and when I turn both left and right?
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bl1300
Posted a lot
Posts: 1,678
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Nov 16, 2011 21:37:16 GMT
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If it was a bush on the right hand diff output shaft then it could cause the symptoms described but I still think its more likely closer to the wheels. As for an input shaft bush as you say id expect it to behave in the same manner weather or not its turning left or right as it should still be turning at the same speed regardless
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Current fleet.
1967 DAF 44
1974 VW Beetle 1303s
1975 Triumph Spitfire MkIV
1988 VW LT45 Beavertail
1998 Volvo V70 2.5
1959 Fordson Dexta
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Dez
Club Retro Rides Member
And I won't sit down. And I won't shut up. And most of all I will not grow up.
Posts: 11,790
Club RR Member Number: 34
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Nov 16, 2011 21:39:27 GMT
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steering rack inner pivot/joint? i usually find its this if it only manifests itself when turning one way, or the rear wishbone bush as SOC suggests.
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Nov 16, 2011 21:52:48 GMT
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If it was a bush on the right hand diff output shaft then it could cause the symptoms described but I still think its more likely closer to the wheels. As for an input shaft bush as you say id expect it to behave in the same manner weather or not its turning left or right as it should still be turning at the same speed regardless Yeah makes sense mate. |
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Nov 16, 2011 21:55:44 GMT
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steering rack inner pivot/joint? I usually find its this if it only manifests itself when turning one way, or the rear wishbone bush as SOC suggests. With it also happening under load going in a straight line I wouldnt have thought it would be the steering rack? |
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Nov 16, 2011 22:21:46 GMT
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Reason I suggested the rear wishbone bush in the first place is because the 9-3 is to all intents an puropses a vectra, and vectras are very fond of munching the wishbone bushes and then pulling all over the road  |
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To get a standard A40 this low, you'd have to dig a hole to put it in |
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