Hesitation when accelerating, sometimes! why?

[chris watton]

Right, I hope someone can suggust why my Tam seems to hesitate when accelerating, like it is struggling to find the power, but only sometimes, not all the time, although the past 2 days it seems to have got worse!
No warnings are showing, and all pressures, temps, oil/coolant levels are absolutely fine.
I took it to County TVR for a diagnostic a few weeks back, but said there's nothing wrong, but I know there is, even Chan commented on the hesitation yesterday when she drove it.
The only 'visible' sign of something being not quite right in the engine bay is one of the injector leads, that attaches to the injector/throttle body had black tape around it, suggesting the cap has split, could this possibly have something to do with it. As I said, sometimes it accelerates great, other times it seem very 'lumpy'
Hope someone can put my mind at rest, these wouldn't be symptoms of anything to do with the valves (gulp), could it?

Thank you

Chris

[chris watton]

BUMP!!! lol

Anyone??

[Targarama]

I suggest getting another dealer to have a quick look (if they will oblige).

Also, try asking on the Tuscan forum - they have the same engine after all.

[paul.davies]

Chris,
Have a look through the forums for info on the dethrottle chip.
I remember reading about the hesitation, the chip apparently smoothes the responses from the throttle potentiometer.

Paul

[chris watton]

Thanks Targa, didn't think of that!!!, have now moved it to the Tuscan forum,,