Hi there guys, i was looking for some advice i have recently developed a flat spot on my throttle. At around 2000 revs the car start to stutter, the engine light came on with engine system fault and limited speed setting. managed to get it home and got the diagnostic machine on it and it came up with the code P2135 something to do with the throttle switch. It was able to drive a short distance today but still with the flat spot but then the engine system fault came on and limited the speed cut out, but then i got it restarted and nursed it back. Any ideas to me its sounding expensive.