gear change
#1
Can anyone help.
I have a MY00 turbo with 6500 miles on the clock. When I change gear under hard acceleration the car jolts(thus I am suffering from severe whip lash!!!!) Is it me, or is there a problem.
I have a MY00 turbo with 6500 miles on the clock. When I change gear under hard acceleration the car jolts(thus I am suffering from severe whip lash!!!!) Is it me, or is there a problem.
#3
No there's not a problem.
I believe that this is caused by free play in rear subframe assembly which can move back and forth slightly on its mounting to the chassis (in front of and below the wheel arch). When you change gear, the torque to the back wheels forces the subframe back suddenly against the chassis causing a banging sound.
I think all turbos do this. I presume this is what you are referring to.
D.
[This message has been edited by DJB (edited 05 March 2001).]
I believe that this is caused by free play in rear subframe assembly which can move back and forth slightly on its mounting to the chassis (in front of and below the wheel arch). When you change gear, the torque to the back wheels forces the subframe back suddenly against the chassis causing a banging sound.
I think all turbos do this. I presume this is what you are referring to.
D.
[This message has been edited by DJB (edited 05 March 2001).]
#4
Thanks DJB
Not being mechanically literate, I didn't understand you explanation fully. I was just a bit worried when it happened as I have not seen any literature mentioning it.
Thanks for the reply ian-a
Not being mechanically literate, I didn't understand you explanation fully. I was just a bit worried when it happened as I have not seen any literature mentioning it.
Thanks for the reply ian-a
#5
Scooby Regular
Join Date: Sep 2000
Location: Deepest Darkest Dorset!!
Posts: 10,011
Likes: 0
Received 1 Like
on
1 Post
Sorry to disagree DJB, but I would say that its probably driver error ( sorry Ian).
I would say that its probably going momentarily off boost and then snapping back on when it realises that there are enough revs on to give boost, I used to suffer with this badly until I learnt to drive around the problem, I now find that it's better not to change gear too quickly and let the boost do it's own thing, you don't really make progress that much quicker by changing gear faster, you just give yourself whiplash.
I hope you understood that, I'm no technobuff either, but I have done a few thousand more miles than you have.
Hope this helps
Ron
I would say that its probably going momentarily off boost and then snapping back on when it realises that there are enough revs on to give boost, I used to suffer with this badly until I learnt to drive around the problem, I now find that it's better not to change gear too quickly and let the boost do it's own thing, you don't really make progress that much quicker by changing gear faster, you just give yourself whiplash.
I hope you understood that, I'm no technobuff either, but I have done a few thousand more miles than you have.
Hope this helps
Ron
Thread
Thread Starter
Forum
Replies
Last Post
Sam Witwicky
Engine Management and ECU Remapping
17
13 November 2015 10:49 AM