Jerky 996 TT through traffic.......

Jerky 996 TT through traffic.......

Author
Discussion

rumplestiltskin

Original Poster:

1,084 posts

223 months

Monday 3rd October 2005
quotequote all
Hi

New to the Forum so hope this is the kind of thing that is OK to post.
I have an 02 996 TT which has started to feel a little “jerky” around town. Take up from standstill isn’t very smooth, as the clutch is engaged, often the revs drop quite a bit before bouncing back up, this makes me think its going to stall so apply more throttle which leads to over-revving. It makes stop start driving quite a pain. It actually doesn't stall ever but feels like it might, making progress quite jerky.
Any ideas what it might be. The car has done 23k miles on the original clutch.

Rumple.

Don

28,377 posts

285 months

Monday 3rd October 2005
quotequote all
Our Chimaera got very like that prior to a new clutch. 23K miles doesn't sound like enough to have worn it out, though?

I'm sure an owner will be along shortly with a more specific comment.

Vesuvius996

35,829 posts

272 months

Monday 3rd October 2005
quotequote all
You'd have to go some to wear out a clutch in 23k miles.

Sounds like it might be an engine thing? Maybe an airflow meter or something - sounds to me like the ECU is struggling to compensate for something odd going on with the information it is being fed....

Is the car under warranty?


>> Edited by Vesuvius996 on Monday 3rd October 13:48

rumplestiltskin

Original Poster:

1,084 posts

223 months

Monday 3rd October 2005
quotequote all
No, its been out of warranty for a few months now.
I wonder why its just suddenly started happening though?

turboguru

448 posts

231 months

Monday 3rd October 2005
quotequote all
mine has done it since I got it, I got the ECU tweaked for more power and it has helped but every now and again the revs bounce. I have had OPC's spend ages on it and all say its fine it just has a mind of its own at times. I wouldnt worry too much a know of a few that also do it.

rumplestiltskin

Original Poster:

1,084 posts

223 months

Monday 3rd October 2005
quotequote all
Mine is standard, and you do learn to drive "around" it, but its quite annoying. Apart from what I describe it makes "spirited" standing starts very tricky....I got jumped by a Ford Fiesta yesterday !

willr

363 posts

254 months

Monday 3rd October 2005
quotequote all
Try using Optimax for a couple of tank-fulls and see if that helps.

spenny_b

1,071 posts

244 months

Monday 3rd October 2005
quotequote all
Could be Lamda sensors?...had similar symptoms before on a couple of cars, although not when driving away, more like when pulling up to a junction, it didnt hold the idle speed, then slowly corrects itself to a "normal" idle.

big.bad.wolfie

910 posts

241 months

Monday 3rd October 2005
quotequote all
23k for clutch isn't too unusual on a 4wd, my C4S had it's clutch replaced at 24k, although it did have a little life (3-4k) left in it, but the impending RMS replacement really helped at decision making process at the time.

superlightr

12,856 posts

264 months

Tuesday 4th October 2005
quotequote all
I had a similar thing in both my 996tt's.
I found that I was riding the clutch in first too much and found it better to let the clutch out fully, and the car felt better.

The more you try to balance it, the more you reve, the more you slip and back and forth and trying too hard.

Practice with the clutch up very low speeds and see what happens to find the full bite. I think you will be surprised at how little revs you can use with the clutch up. I was

rumplestiltskin

Original Poster:

1,084 posts

223 months

Tuesday 4th October 2005
quotequote all
Its been run on Optimax all its life.
The revs don't drop when I approach a junction, thats fine, just when pulling away.
The car also has clutch judder in reverse - forgot to mention that.

340ragtop

919 posts

246 months

Tuesday 4th October 2005
quotequote all
get another warranty would be my comment on a 65k car!

could well be the things discussed above, or indeed a bad tank of petrol.

rumplestiltskin

Original Poster:

1,084 posts

223 months

Wednesday 5th October 2005
quotequote all
superlightr - will try that.
340 - its had several tanks and keeps doing it and yep should get another warranty.
The comforting thing is that a few weeks ago it went in to an OPC for a service & I asked them to drive the car through traffic to see if they thought it was a problem.
They said they did & their mechanic found everything was OK in his opinion. If they did or not is another matter but any chance an OPC gets to diagnose a "problem" that needs lots of £££ to fix they usually take !!

Also forgot to mention, when the car is cold, for the first 5 mins as it warms up, no "problem" - its ultra smooth.

superlightr

12,856 posts

264 months

Wednesday 5th October 2005
quotequote all
hope its not sounding like teaching your gandma to suck eggs..

I found that the more I think about driving, ie gear changes, clutch etc often you tence up, and it makes matters worse.

As soon as you think you are about to stall, clutch in and more revs and I over compensate sometimes, hence the next time, im more tence, and try too hard and still cant get it smooth.

Mine has a bit of judder in lifting up clutch in reverse. (12000miles) as did my previou 996tt (20000miles)

Lifiting up the clutch in 1st almost imeddiatly got a much better responce, it didnt stall, and I didnt have the slipping/over reving.

Have you tried moving your seat back, so you cant depress the clutch to the floor. That has help me in the past.

rumplestiltskin

Original Poster:

1,084 posts

223 months

Wednesday 5th October 2005
quotequote all
superlight - funny you say that. I drive with my seat very far forward. I am 6ft in shoes & my wife is 5'8 & to demonstrate how close I like to sit, I dont ever change the position of her driving seat in her car.

In fact lately I have been wondering if I am sitting too far forward, as my knees touch the lower dashboard on the TT while driving & I often think in a front impact if the dash came back only a little bit it would kneecap me.

So I have been experimenting with driving positions. In the position I am in I can put the clutch right to the floor & still have about a foot of travel in my leg !
So I am wondering if this might be causing an issue with getting a smooth getaway.

I always thought that the clutch had to go down all the way to the floor to engage properly – does it matter if it doesn’t?


>> Edited by rumplestiltskin on Wednesday 5th October 12:56