my son has a 98 Acura TL and the heat/ac blower motor stopped working. well it kinda works sometimes.i looked online and found that changing it to be a lengthy and expensive process to be done only by certified tech. like i said it works sometimes and when it does it does not make a noise to indicate bad bearings.also i noticed as i turned the knob for hot to cold it affected how fast or slow the fan run.anyone got any definite answers
the motor is going bad and will have to be replaced, the dash will have to be removed and the heater box has to be disassembled ...bad design ive done them ,they built the car around the motor ,ha
Replace it because you can end up with a blown head gasket which cost a lo of more $$$ to replace!
If, when it is running, it is not noisy; would infer the bearings may not be bad The three most likely culprits are 1. The brushes in the motor are nearly worn out.. 2. The contacts in the fan switch are getting dirty or worn. 3. The motor speed resistors are going bad. No. 2 is easier. If it is a mechanical switch, you might be able to take it apart, clean the contacts with fine grit wet dry sandpaper or steel wool, and reassemble it. If it is a sealed switch, you need to hunt a replacement. No. 3 would be indicated if you began to lose some of the fan speeds but not all of them. There is a circuit board or module that needs replaced. If the brushes are bad, the motor needs to come out. You maybe able to find a replacement brushes at a electric motor repair shop, but that's unlikely, you are probably back to a big dissembly and motor replacement.
