nrwilliams
Guest
Okay, hope someone can help!
2004 Seat Cupra FR TDI.
Remap
Coilovers
TT front brakes
Milltek exhaust etc etc etc
Had coilovers, front wishbones, drop links and new tyres in the last 4000 miles and a full alignment!
Problem has developed since then.
When accelerating hard the car pulls violently to the left. When you release the throttle the pull stops. I have tried driving on the other side of the road and its not a camber problem. Also when coasting the car goes in a perfect straight line and also brakes true.
Its just had its first mot and passed with no problems.
If you go in reverse the car goes to the right. and if you sit with the handbrake on the bring the clutch to biting point the steering wheel starts to go left and in reverse it goes right.
So I am happy that the chassis is setup and true.
I am thinking:
Differential : possibly delivering more drive to one side of the car - but no mechanical noises and no gearbox problems.
Inner CV joint - I have read about inner CV's causing this problem.
Engine mounts - although they seem fine it does develop a lot of torque and could be twisting the engine on the mounts?
Three dealers and tow independents so far have not been much help.
Also tried swapping the tyres and problems still there.
Any ideas greatly appreciated before I spend a weekend pulling my hair out!
LOL
2004 Seat Cupra FR TDI.
Remap
Coilovers
TT front brakes
Milltek exhaust etc etc etc
Had coilovers, front wishbones, drop links and new tyres in the last 4000 miles and a full alignment!
Problem has developed since then.
When accelerating hard the car pulls violently to the left. When you release the throttle the pull stops. I have tried driving on the other side of the road and its not a camber problem. Also when coasting the car goes in a perfect straight line and also brakes true.
Its just had its first mot and passed with no problems.
If you go in reverse the car goes to the right. and if you sit with the handbrake on the bring the clutch to biting point the steering wheel starts to go left and in reverse it goes right.
So I am happy that the chassis is setup and true.
I am thinking:
Differential : possibly delivering more drive to one side of the car - but no mechanical noises and no gearbox problems.
Inner CV joint - I have read about inner CV's causing this problem.
Engine mounts - although they seem fine it does develop a lot of torque and could be twisting the engine on the mounts?
Three dealers and tow independents so far have not been much help.
Also tried swapping the tyres and problems still there.
Any ideas greatly appreciated before I spend a weekend pulling my hair out!
LOL
Did they drop the front sub frame at any point? If this is off to one side by even a small amount it can cause the symptoms you describe. Basically this alters the 'true' Ackerman angle which can cause unwanted/unpredictable results.
nrwilliams
Guest
Ah
Do you need to drop the sub frame to change a clutch?
If so the subframe was dropped when the clutch was fitted with the suspension.
But after with work it drove ok for about 2k miles.
Are there any alignment marks for the subframe? How do you get it into the right position?
Thanks!
Do you need to drop the sub frame to change a clutch?
If so the subframe was dropped when the clutch was fitted with the suspension.
But after with work it drove ok for about 2k miles.
Are there any alignment marks for the subframe? How do you get it into the right position?
Thanks!
Well normally you can put it back exactly where it was by using the marks left by the securing nuts...
Another thought, how low have you gone with the coilovers? If one side is higher than the other (bearing in mind its now settled down) then it will drift/pull to one side.
Also if one side is stiffer than the other this can cause the same symptoms. Dont fool yourself into thinking newish coilovers can cause this because they can especially if you have run them quite low (not much piston travel) or at their hardest setting.
I've been through more sets of coilovers than hot dinners by running them very low and hard...
Edit : Yes you drop the subframe for gearbox removal...
Another thought, how low have you gone with the coilovers? If one side is higher than the other (bearing in mind its now settled down) then it will drift/pull to one side.
Also if one side is stiffer than the other this can cause the same symptoms. Dont fool yourself into thinking newish coilovers can cause this because they can especially if you have run them quite low (not much piston travel) or at their hardest setting.
I've been through more sets of coilovers than hot dinners by running them very low and hard...
Edit : Yes you drop the subframe for gearbox removal...
nrwilliams
Guest
Interesting.
They are running quite hard and it is to low.
I am planning on servicing it at the weekend and was going to raise it 10mm or so.
I had to run them hard to stop the undertray bottoming out on bumpy roads! (I will not be going back to the garage that fitted them).
So that gives me something else to look at!
Check the subframe.
Raise the ride height
Get another wheel alignment.
Be cheaper to get rid LOL
Any suggestions on an ideal ride height? What have other people set theirs up to?
Thanks for your help.
They are running quite hard and it is to low.
I am planning on servicing it at the weekend and was going to raise it 10mm or so.
I had to run them hard to stop the undertray bottoming out on bumpy roads! (I will not be going back to the garage that fitted them).
So that gives me something else to look at!
Check the subframe.
Raise the ride height
Get another wheel alignment.
Be cheaper to get rid LOL
Any suggestions on an ideal ride height? What have other people set theirs up to?
Thanks for your help.
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