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| Wobbly Van Syndrome | |
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| Tweet Topic Started: Apr 23 2015, 02:15 PM (2,956 Views) | |
| Spooky_b329 | Apr 23 2015, 02:15 PM Post #1 |
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My van has a tendency to tramline along the grooves caused by lorries and is also affected quite noticeably by side winds and overtaking lorries. When towing a large horsebox it can get a bit exciting at times... Its most dramatic when sitting at 56mph with the trailer and one of those blumming holiday coaches come cruising past at 60mph and suck me over then push me back to the rumble strips! I've driven various Transits and Vauxhall vans for work over the years and none of them have done this, and although I do notice the odd van that looks like its a bit of a handful, I don't think its normal. On a good road with no wind it is a pleasure to drive and a quick blast up to 80mph is fine with no wandering about. So, suggestions on possible issues would be welcome.
Thanks guys
Edited by Spooky_b329, Apr 23 2015, 02:32 PM.
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| plumber john | Apr 23 2015, 06:44 PM Post #2 |
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I had this same problem especially when overtaking HGV's on the motorway, as I'd pass a lorry and move to pull in she would be swaying all over the place, very scary! Not good round bends on the country roads either.. Very sponge like!! Anyway, last time out in the camper one of the rear leaf springs snapped, so decided to upgrade the springs to heavy duty twin leafs, also fitted new shackle bushes.. Unbelievable improvement! Now drives absolutely solid, sits a little bit higher but she was always low on the back end, the original springs are pretty naff if your loaded all the time, mine is always running at 3250kg.. John |
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| Spooky_b329 | Apr 23 2015, 07:09 PM Post #3 |
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Yep mine runs at 3100kg, interesting about the springs as to be honest it could do with riding slightly higher, my twin axle trailer tends to travel slightly nose down and when maneuvering it pivots about the front axle. What did it cost you for the uprated springs (If you don't mind me asking). My other option could be to get longer shackles on the existing leafs rather than messing about with the originals. Did your uprated springs make the ride any more compliant? |
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| plumber john | Apr 23 2015, 07:29 PM Post #4 |
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Mine has been used to tow a horse box previously and I'm sure this has taken it's toll.. Now she sits just right and rides really nice, like on rails.. Only problem I had was with the brake load compensator, I've had to adjust it right up cause she's sitting higher the compensator was acting like she was unloaded! But great back brakes now!! Heavy duty leaf springs 'pre-bushed' cost 300 quid including delivery from 'midland road springs' Shackle bushes 46 quid from Vexi.. Had them all fitted within a day, with help from my son, did them on the drive!! |
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| ivecojoe | Apr 23 2015, 08:46 PM Post #5 |
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There is what I would call an improved version of the drop links that hold anti roll bar on ebay,they are solid instead of two plates bolted together,one of my vans has them fitted and thats rock steady compared to other standard one, as you tow all the time I would go uprated springs as well,if after that its not stable check front shockers,and upper and lower joints on front suspension as any play will affect van causing bump steer etc.also bushes on front suspension may be worn they are easy enough to replace. hope this helps.(presuming track rod ends etc are ok) |
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| yiannism | Apr 24 2015, 04:40 AM Post #6 |
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Hello Spooky, Check link below of what i did, Excellent mod...and excellent handling in any condition. Have in mind that before i did the mod...i changed the oem rear shocks to Bilstein Shocks.. http://ivecoforums.com/topic/8835762/1/#new John |
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| Spooky_b329 | Apr 24 2015, 05:06 AM Post #7 |
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Thanks, all good stuff. Will start saving for new springs and sort the anti roll bar sooner
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| aidan | Apr 24 2015, 12:33 PM Post #8 |
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You can occasionally get odd symptoms like this if front and rear tyres are not the same type, I would swap them front to rear just as a 'test' to see if it improves things. Cheers Aidan |
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| Spooky_b329 | Apr 24 2015, 05:04 PM Post #9 |
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Tyres are same all round, 50% worn on the front and two months old on the back. I've not heard anything bad about them, if they were causing this level of erraticness I'm sure it would be well talked about on the net
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| ivecojoe | Apr 24 2015, 05:37 PM Post #10 |
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get the joints on the front wish bones checked by local mot station, wont cost much but when they go steering is errratic. |
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| Spooky_b329 | May 8 2015, 07:10 PM Post #11 |
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Well new anti-roll bar droplinks and bushes fitted (plenty of plusgas needed to unseize the bolts, but once they are cracked off its only six bolts to remove the whole thing) and a dead blow hammer to change the droplinks. Short test drive and it no longer seems to be steering from the back, feels firmer and also a bit quieter/less rattly behind. Not got up to motorway speeds or driven in wind yet. Two cab mounts to fit at the front and then I'll see if I want to change the spring hanger bushes...and its still creaking quite badly when the drivetrain loads up between forward and reverse...potentially could be the hanger bushes - might squirt some lube at them and see if I can prove its them... Edited by Spooky_b329, May 8 2015, 07:11 PM.
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| mfoobar | Jul 2 2015, 11:28 AM Post #12 |
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Spooky, how you getting on with all this? My van is also feeling a bit 'odd' when steering. Like it is steering from the back. I've changed all the rear suspension bushes over the last two years and the rear stabiliser bar bushes. But wondering if it is the front small linkages at the end of the front stabiliser bar are worn. Is that what you mean by droplinks? My front cab mounts are shot. I need to replace them. I have the mounts, just not had time to fit them. I get a bit of a clunking from the front at times and I'm hoping that the new cab bushes sort that. -Matt |
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| Spooky_b329 | Jul 3 2015, 06:26 PM Post #13 |
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Haven't looked at the front but do get a bit of a rattle, was thinking it would be the bearing where the steering column goes through the floor but could be suspension. Drop links...the rear ones that connect the roll bar to the axle. Also changed the D bushes where the roll bar attaches to the chassis. Other than that, it feels a bit like a huge go kart now, definitely got rid of the vagueness from side winds, not done any dual carriageway for a while so not sure about the swerving about when a large vehicle goes past. It has also got rid of the tendency for the steering to seem to want to wind more lock on instead of naturally straightening out as you go around T junctions etc, thats a bit un-nerving and feels wrong! Got some pics of doing the front cab mounts, will post them up tomorrow if I remember. |
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| mfoobar | Jul 3 2015, 10:37 PM Post #14 |
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I had a clonking from the front, and it was the bearing where the steering column goes through the floor. Replace that (comes as a unit with the lower stering column) and it was sorted. I also used to have the same feeling of it winding on extra lock as you went around mini roundabouts. Felt like steering a boat in that you had to 'un steer' at the end of the corner. Replacing the steering bushing and all the rear suspension bushes sorted it. I'd definitely appreciate your cab mount pics. I went out tonight to try and spray some plus gas on the bolts in preparation for maybe having a go at them tomorrow. I need to take the plastic inner arch pieces off, but I fear that all the screws for it will disintegrate when I attempt it... I'm preparing myself to drill the screws out or try a screw extractor on them. Where did you jack the body up from? I've seen mention of putting a bottle jack between the tire and arch... but looks like there would me much more room to work if the wheel was off the van. So I was thinking of jacking the front up and put axle stands under the front jack point and remove the wheel, then jacking the body up separately. Just not sure best place to jack from. Strangely I had the van up on a two-post lift at a garage earlier this week. It was being lifted on the chassis rails, yet the gap in the front bumper between the body and the chassis opened up as the van lifted. I wasn't expecting that, as thought lifting from the chassis wouldn't cause the body and chassis to separate? -Matt |
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| Spooky_b329 | Jul 4 2015, 06:52 AM Post #15 |
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![]() ![]() I had one screw brake off when removing the wheel arch liners, I can't remember what I did in the end, possible drilled a new hole alongside as I'm sure I remember using the Aldi thread tapper for a new bolt
Edited by Spooky_b329, Jul 4 2015, 07:00 AM.
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