Suddenly the fan to the heater stoppet working. It`s not the fuse. Any suggestions?

Tedd

 

Yeah, do some basic troubleshooting.

Do you get +12V at the wire to the motor? Does the motor run if you jumper +12V directly to the terminal?

 

Thanks. I will try your suggestions, but i will wait untill i get the shop manual. I am not very experienced

 

While it is always a good idea to have a wiring diagram and Chassis Service Manual on hand, it is pretty basic to remove the wire from the motor, ck for voltage at the wire with light or meter or buzzer or etc.

If no volts, THEN you might need the manual for under-dash details.
If yes volts, then apply your own 12V to the motor lead right from the battery and see if the motor spins. One would assume not, if there was already 12V present at the wire.

Motor not spinning when fed 12V indicates a bad motor- or not grounded well perhaps- also easy to check with test light or meter. One might tap the motor lightly while it has power and see if you get one last run by jiggling stuck brushes into place. Or, just replace the motor.

"Just" can involve quite a bit of access dismantling depending on your exact model and whether AC stuff is involved.

Oh and there is sometimes a separate fuse inline under the hood for high speed of the fan motor.