hi, i've got a 1998 astra mk4 1.6 8v and there are few problems. the eletric fan of the cooling system isnot working as well the air con system. when i pulled my car to a local garage for a check, replced a fan control unit, and nothing got better. and also air con system canot do a regas. the car still drives. but the tempreture rise quickly if got triffic jamed in the city centre. have anyone seen this kind of cases before? also could you give some advices please. thankx Ray.