Originally Posted by mark bizley

can i just point out hall sensors tend to pack up at the wrong times.

i had my RS set up etc. then a few weeks later i had the above problem just as you described.

sounds like your RS is in the early stages of hall sensor failure.
my sensor packed up about 3 weeks after it started.

i'd look into getting a new disrubutor, the hall sensor comes with it too.
these are £160 plus p&p from burton power and you get a £20 surcharge in return of your old dizzy.