tram-lining and fault code 12
Discussion
hi gang 
am settling into DJC' sagaris OK now, but am wondering if theres a way i can dial out some of the massive tram-lining and erm...well, nervous-ness really.
Its just had new tyres on the back, but after covering 300 miles this weekend i would have thought most of the release agent would be out of them by now. As expected, they were fitted by the dealer with massively the wrong pressure (34psi!!) and dropping them down to 24 all round has helped, but its still really squirmy and i can feel the tyres loading up to the point of total loss of grip even in very, very low speed corners. any suggestions? do I need to replace the front pair too perhaps? its really far too snatchy on even only partially poor surfaces, for example, when i was overtaking someone yesterday on a relatively new stretch of dual carriageway, the car veered toward the car i was overtaking quite substantially as it found new tram-lines in the road. what have you all done to combat this? its actually worse than my old z4 on run-flats, and that defined a new-era of skittishness.
furthermore, when i started the car this morning it died out on me a few times and then refused to start without needing me to maintain some revs, and then died out twice more, showing error code 12. anyone know what this pertains to as usefully TVR haven't provided a list (Ive done a search but it doesn't appear to have come up before). there was no text written next to the code. or should i be needing to nurse the throttle a little on colder mornings to keep it running?
id appreciate any thoughts you have folks
am settling into DJC' sagaris OK now, but am wondering if theres a way i can dial out some of the massive tram-lining and erm...well, nervous-ness really.
Its just had new tyres on the back, but after covering 300 miles this weekend i would have thought most of the release agent would be out of them by now. As expected, they were fitted by the dealer with massively the wrong pressure (34psi!!) and dropping them down to 24 all round has helped, but its still really squirmy and i can feel the tyres loading up to the point of total loss of grip even in very, very low speed corners. any suggestions? do I need to replace the front pair too perhaps? its really far too snatchy on even only partially poor surfaces, for example, when i was overtaking someone yesterday on a relatively new stretch of dual carriageway, the car veered toward the car i was overtaking quite substantially as it found new tram-lines in the road. what have you all done to combat this? its actually worse than my old z4 on run-flats, and that defined a new-era of skittishness.
furthermore, when i started the car this morning it died out on me a few times and then refused to start without needing me to maintain some revs, and then died out twice more, showing error code 12. anyone know what this pertains to as usefully TVR haven't provided a list (Ive done a search but it doesn't appear to have come up before). there was no text written next to the code. or should i be needing to nurse the throttle a little on colder mornings to keep it running?
id appreciate any thoughts you have folks
djc said:
Error code 12 is a new one on me Im afraid! Do you get any wording with the error code?
As a general rule always be generous with the throttle when she is cold.
As a general rule always be generous with the throttle when she is cold.
no wording, just the code. if its that the car needs a bit of throttle in the morning thats fine.
what of the tramlining folks?
targarama said:
What tyres are they? Not SO3s I hope.
Maybe something has been knocked out of alignment (speed bump, driving over a kerb etc.).
Has the car always felt the same? Or is this definitely a new feeling?
Maybe something has been knocked out of alignment (speed bump, driving over a kerb etc.).
Has the car always felt the same? Or is this definitely a new feeling?
good year eagle f1 255/35z r18's. same as on the front.
the car was skittish when i had it on test, but then the rear tyres were nearly out. its definitley worse now. theres no knocking, vibration or pulling though, im doutful its balance, geo or alignment.
thoughts anyone?
Im at a loss to be honest...the error code
The car will always be prone to a little tramlining with low profiles and 255s up front.
The car was definately more skittish when I picked her up with the new tyres on than previously, but then I didnt think the grip levels were as low as you did beforehand. Ive certainly experience the low speed lack of grip you have, but then I had 18months to dial myself into the car! Im probably the wrong person to speak to about the front end of the car though as Ive long been the odd man out when it comes to Sagaris steering. Ive always said the steering was too over assisted and the car was too darty up front. Everybody else liked it!
The car will always be prone to a little tramlining with low profiles and 255s up front.
The car was definately more skittish when I picked her up with the new tyres on than previously, but then I didnt think the grip levels were as low as you did beforehand. Ive certainly experience the low speed lack of grip you have, but then I had 18months to dial myself into the car! Im probably the wrong person to speak to about the front end of the car though as Ive long been the odd man out when it comes to Sagaris steering. Ive always said the steering was too over assisted and the car was too darty up front. Everybody else liked it!
djc said:
Ive always said the steering was too over assisted and the car was too darty up front. Everybody else liked it!
Not quite everyone
Tony and the guys at HHC mades ome changes to my Iced Tit Saga Lout as I was un-impressed with the steering. I belive it now has more feel and turns in better than standard.... but its still picks up camber change in the road and tramlines.
Daftlad said:
djc said:
Ive always said the steering was too over assisted and the car was too darty up front. Everybody else liked it!
Not quite everyone
Tony and the guys at HHC mades ome changes to my Iced Tit Saga Lout as I was un-impressed with the steering. I belive it now has more feel and turns in better than standard.... but its still picks up camber change in the road and tramlines.
so its 'they all do that sir'?
nervous said:
Daftlad said:
djc said:
Ive always said the steering was too over assisted and the car was too darty up front. Everybody else liked it!
Not quite everyone
Tony and the guys at HHC mades ome changes to my Iced Tit Saga Lout as I was un-impressed with the steering. I belive it now has more feel and turns in better than standard.... but its still picks up camber change in the road and tramlines.
so its 'they all do that sir'?
Most cars with tyres of that size (and profile) will do it. Worn tyres at the front will excarbate it. Worn tyres at the front, new at the back will have a further effect as the geometery of the car will have changed ever so slightly.
Daftlad said:
Most cars with tyres of that size (and profile) will do it. Worn tyres at the front will excarbate it. Worn tyres at the front, new at the back will have a further effect as the geometery of the car will have changed ever so slightly.
agreed if it were just tramlining, but the immense twitchyness?
I had the same thing happen with my Tamora when I fitted new rear tyres. Took it to a TVR dealer who was suposed to do full Geom. set up, but it was as bad as ever. I then took it to an Indy with the same results. In the end I took it to Top Cat Racing and they did a proper job. It's like a completely different car now.
Tramlining can be caused by tyres and/or suspension.
As you've got new tyres on the back, I'll assume your front tyres are good too and that the edges of them look nice and roundy. Quite unlike the wheel of a train in fact.
So, suspension: if you have the slightest little bit of slop on the wishbone bushes (and to an extent the supporting bushes), your suspension will behave like the trailer bogies on the front of a steam train and follow the tracks in the road. Without you having to steer at all..
Therefore, I suggest you go to an MOT centre and get them to pull the front and rear suspension around to try and find some slop, as this appears to be culprit #1. Check the front first.
As you've got new tyres on the back, I'll assume your front tyres are good too and that the edges of them look nice and roundy. Quite unlike the wheel of a train in fact.
So, suspension: if you have the slightest little bit of slop on the wishbone bushes (and to an extent the supporting bushes), your suspension will behave like the trailer bogies on the front of a steam train and follow the tracks in the road. Without you having to steer at all..
Therefore, I suggest you go to an MOT centre and get them to pull the front and rear suspension around to try and find some slop, as this appears to be culprit #1. Check the front first.
Can I follow soovy as test driver if this is the right answer?!
Globulator said:
Tramlining can be caused by tyres and/or suspension.
As you've got new tyres on the back, I'll assume your front tyres are good too and that the edges of them look nice and roundy. Quite unlike the wheel of a train in fact.
So, suspension: if you have the slightest little bit of slop on the wishbone bushes (and to an extent the supporting bushes), your suspension will behave like the trailer bogies on the front of a steam train and follow the tracks in the road. Without you having to steer at all..
Therefore, I suggest you go to an MOT centre and get them to pull the front and rear suspension around to try and find some slop, as this appears to be culprit #1. Check the front first.
As you've got new tyres on the back, I'll assume your front tyres are good too and that the edges of them look nice and roundy. Quite unlike the wheel of a train in fact.
So, suspension: if you have the slightest little bit of slop on the wishbone bushes (and to an extent the supporting bushes), your suspension will behave like the trailer bogies on the front of a steam train and follow the tracks in the road. Without you having to steer at all..
Therefore, I suggest you go to an MOT centre and get them to pull the front and rear suspension around to try and find some slop, as this appears to be culprit #1. Check the front first.
Can I follow soovy as test driver if this is the right answer?!
thanks globby
of course, no worries, anytime you like old chum
of a boss'Globulator said:
Therefore, I suggest you go to an MOT centre and get them to pull the front and rear suspension around to try and find some slop, as this appears to be culprit #1. Check the front first.
hm, good idea that, been trying to figure out why my mondeo out handles my tam for a while now, passed its mot with no issues - but might ask them to have a really really good look. that said i'm also trying to get to tvr power for decats and sports exhaust so hopefully someone can help
Edited by david godfrey on Monday 19th February 22:14
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