juddering acceleration

[nickyboyblue]

my cerbie 4.2 judders when touching the accelerator (eg when in traffic) which makes the car a pig to drive! 3 lots of new throttle pots and one new linkage in last three months but still the problem pursists - Help!!!! How to solve the problem?? ideas gratfully received ?!?

[GCerbera]

Could be a fuel issue, but the throttle pots normally are to blame.


Of course it might be down to who has set the car up and you would be wise to email
privately who has done it if they are well known?

I can certainly recommend a few people who would sort the car as I am sure others would.

Let me know
Graham
TCR The Cerbera Register

www.TVR-Cerbera.com

[kojak69]

I've just put some new Magnecour HT leads on mine, plus throttle pots changed. It now runs a lot better.

[andy4200]

just had my car serviced at austec and the adjusted/balanced the throttle pots and now the car is as smooth as a baby's a**e

[Jnr]

Have a look at THIS thread...

Seems to be caused by the rod linking both banks together being a bit of a floosie....


Jnr

[j_s_g]

Plenty of things it could be... poor (95 RON) fuel, throttle pots, lambda sensors (in theory), HT leads, spark plugs, maybe even valve clearances??

[darreni]

I'm thinking of knocking up a rose jointed linkage, using the existing rod but fitting female rose joints to the ends instead of the ball & socket arrangement.
Anyone know the thread size on the linkage?, i'm thinking M4 but we are talking TVR so its possibly some extinct impearial thread.
Anyone know for sure?

Darren.

[Tatlow]

j_s_g said:

Plenty of things it could be... poor (95 RON) fuel, throttle pots, lambda sensors (in theory), HT leads, spark plugs, maybe even valve clearances??

Yeah, I've had similar problems, particularly a misfire on certain cylinders until the revs are up and then they all fire in to life and give you a punch in the back. It can be lots of things that cause it.

It's definitely a garage job. Try Topcats or TVR Power - they'll sort it out. Good luck!

[arcbeer]

Throttle pot settings and replacing HT leads sorted mine out.