intermittent heaters

[aaronlm]

hi guys. my heater was working fine yesterday then today it wouldn't come on. It started up after driving a while then stopped again. any ideas. All the fuses seem fine and it came back on so can't be them.

[Jed Clampit]

Could be one of three thing's the fan speed switch the the motor it self bushes worn or bearings gone dry or the resister pack .
PS one other thing a broken wire intermittently making contact