97ej6dx

For some reason there is a plastic tapping sound from behind my speedo SOMETIMES after the car has been running for a while Ive been ignoring it for a while because i guessed it had something to do with the speedo. the speedo works fine but there is just a tapping noise that is very annoying it seems to go with the speed of the car and not the RPMs of the motor. Any one else have this problem? This is unrelated but my blower motor is loud to when on full speed.. i have a good feeling its a bearing in the motor but i really dont want to tear the dash apart but if i have to to fix this problem i may as well.