Hi....I drive a 1993 cli jetta. had problems with the cooing system! I changed the radiator, tagahanga switch and fermistat. if the tagahanga comes on it stays on. any help or advice?

You can try to get a aircon control unit. They are usaully the problem on those vechiles. The unit gets wet and it blows. If your ignition is switched on your fanswill run until your vechile is cold enough.