Hi, im new on here and a first time astra owner, i have a 98 1.6 8v, i seem to have a flat spot between 1000-2000 rpm then it accelerates normally after roughly 2200 rpm,any ideas? also my temperature climbs to about 90-93 after just 4-5 mins driving and will stay there no matter how slow or quick i drive but as soon as i stop for more than 2 or 3 mins it rises quite quickly to 100 then the fan cuts in, any ideas why this would be? it seems a little high to me. can i get a switch tht will make the fan cut in at about 96? as 100 looks very close to the red.