[Crasher]

You need a fault code read. Which temperature sensor did you change, the one on the radiator or the one on the engine? Is your car fitted with air con?

 

[Crasher]

The temp sensor that controls the fan operation is in the radiator. You get the fault codes read by someone equipped with a diagnostic fault code reading computer.

 

[Crasher]

It is screwed into the radiator, just in front of the radiator fan control unit which is bolted to a bracket under the battery. There are four possible sensors depending on the engine (I think it will be an AKL) and the year (I guess it is a 99) so I recon the sensor will be 1H0 959 481 B. They are quite hard to get out, I use a deep reach 30-mm socket. It is item 17 on the diagram.

 

[Crasher]

Possibly, the air con isn't on is it?

 

[Crasher]

The rear ABS sensor will come out if you heat it up.