hiya lads,i have an ek4 b16a2 "standard engine" rallycar,im in a bit of bother-basically when i start up the engine it ticks over fine-but when the temperature gets up to hot in and around half way on the temp guage its starts to rev up and down between 1000rpm-2500 rpm "approx" up and down up and down,its realy annoying!anybody got any ideas on what this mite be so that i can try them before i bring it to a mechanic to check it out,as always thanks for the help lads