Ryannn
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Okay, so this question is about a 206 I'm afraid, but probably fits any car with power steering. If you hit a bump or pothole driving down the road, the car has a tendency to steer rapidly left and right. In the last year it's had new wishbones and drop links. So could it be the tracking which needs adjusting? Or is it a problem with the power steering? Should it have some sort of damper on? Thanksss  |
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kee
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check the steering rack is central first and then adjust the tracking so it is correct
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Ryannn
Posted a lot
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Feb 10, 2013 10:40:29 GMT
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check the steering rack is central first and then adjust the tracking so it is correct The rack? You mean same length both sides yeah? |
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Feb 10, 2013 12:04:05 GMT
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Has it been lowered? If so, there's your problem...
Steering rack length generally won't affect bumpsteer at all - it's the height of the rack compared to where it joins to the hubs, the relative angle of the steering rack arms to the overall arc of the wheel.
So, check the steering rack mounts to see if it's been fitted correctly, and for any damage
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Last Edit: Feb 10, 2013 12:07:34 GMT by chairchild
You're like a crazy backyard genius! |
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Ryannn
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Feb 10, 2013 12:27:52 GMT
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It's completely standard. I'm going to have a crawl under this week to do some other bits so I'll take a look. It's just had the tracking done apparently but I'm not sure i believe this now...
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Feb 10, 2013 12:50:13 GMT
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tracking just affects the (almost) fixed relationship between each side - it will have virtually no input on bump-steer
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You're like a crazy backyard genius!
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RobinJI
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"Driven by the irony that only being shackled to the road could ever I be free"
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Feb 10, 2013 16:04:48 GMT
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Significant toe out can cause bump-steer like symptoms where the car tramlines and tries to follow undulations in the road. Might be worth getting it checked, especially as places like quick-fit often seem to offer to check it for free, and only charge if adjustment is needed.
As has been said the rack not being central could cause bump-steer as well, count the turns needed from straight ahead to full lock in both directions and make sure they're the same. If they are then that rules that out for free and with little effort.
Also make sure there's no play in anything, especially the track-rods and wheel bearings, and (as said) that the rack's mounted securely and properly, as well as any subframes. (if the car has any) Basically just check everything under the front end for unwanted movement.
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Last Edit: Feb 10, 2013 16:07:38 GMT by RobinJI
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Feb 10, 2013 20:41:59 GMT
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Worth checking tyre pressures and also how well the shockers are working. If bits other than the wish bones (such as the shockers) haven't been replaced in pairs and there is a difference in performance left to right, I would imagine this would happen.
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91 Citroen BX Diesel Estate (on the road)
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ChasR
RR Helper
motivation
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Club RR Member Number: 170
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Bump steer?ChasR
@chasr
Club Retro Rides Member 170
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Feb 10, 2013 21:51:59 GMT
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I would check the tyre pressures and tracking (although as said, it should not have a large impact on bump steer).
Where did you get the wishbones from and what brand were they? I know that GSF and a number of other suppliers were once selling incorrect balljoints for 306s (they were the Non PAS balljoints being sold for cars with Power Steering). Unless you compared them with the original BJs that came off the car, many were hard pushed to tell that the were incorrect for the car (bar the fact that the car had a surprising amount of positive camber when put in for a geometry check.
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Ryannn
Posted a lot
Posts: 2,421
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Feb 10, 2013 23:00:48 GMT
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I would check the tyre pressures and tracking (although as said, it should not have a large impact on bump steer). Where did you get the wishbones from and what brand were they? I know that GSF and a number of other suppliers were once selling incorrect balljoints for 306s (they were the Non PAS balljoints being sold for cars with Power Steering). Unless you compared them with the original BJs that came off the car, many were hard pushed to tell that the were incorrect for the car (bar the fact that the car had a surprising amount of positive camber when put in for a geometry check. Argh... I didn't fit them  and I don't have a reciept... they were PO |
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and I don't have a reciept... they were PO