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got a problem on the avant where the blower only works on setting number 4......but on speed 1 !
Read somewhere it was a motor/fuse on the side of the heater matrix?
got a problem on the avant where the blower only works on setting number 4......but on speed 1 !
Read somewhere it was a motor/fuse on the side of the heater matrix?
Anyone clarify and have a spare?
search for "resistor pack" lives on the fan, variable resistor, rheostat, whatever floats your boat
resistor pack for sure - or maybe just kak contacts at it - never had my hands on one to judge whether its worth opening one to try repair of any internal joints.
The heater fan motor has partailly seized and taken out the thermal fuse which is across the resistor pack that controls the speed.
Clean and lubricate the motor and you'll get full speed back on setting 4. To get speeds 1 to 3 back, check the thermal fuse for continuity and replace it. You can buy them from Maplins but be very careful if you solder the replacement in or you'll melt it
The heater fan motor has partailly seized and taken out the thermal fuse which is across the resistor pack that controls the speed.
Clean and lubricate the motor and you'll get full speed back on setting 4. To get speeds 1 to 3 back, check the thermal fuse for continuity and replace it. You can buy them from Maplins but be very careful if you solder the replacement in or you'll melt it
John
thanks john, please dont tell me to get to the motor you have to take the dash out????
thanks john, please dont tell me to get to the motor you have to take the dash out????
No, you don't, just remove the trim below the glove box and you'll be able to see the motor up on the left. The orientation and the size of the motor is different depending on if you have A/C or not, the bigger A/C fan motor requiring a different resistor pack as Jase noted above.
The resistor pack is mounted on the side of the air duct to the right of the motor held in by a self tapper. It has a multiway connector on it that connects to the fan loom. The resistor packs are bullet proof, it's just the thermal fuse on them that often fails.
I can repair the thermal fuse on your resistor pack if you like - subject to negotiation
The resistor pack gets hot as it is used to slow the motor which is why it's mounted in the air flow of the cooling duct to cool it.
If the fan motor slows because it's seizing the resistor pack will get even hotter. This coupled with the fact that the air flow will reduce providing less cooling means the resistor pack could melt itself out of the housing - hence the thermal fuse which melts if it reaches a certain temperature and stops all speed control, i.e. speeds 1 to 3. Full speed doesn't go through the resistor pack thermal fuse so still works - but maybe slower if the motor needs lubrication.
Just started to look at swapping in my new blower motor and resistor pack (rheostat!) on the first dry chance I've had (no warm garage for me)!! I understood that removing the blower could be done with the dash in but the top 2 screws are above the blower duct that appears to only be (re)moveable with the dash out. I have big hands and cannot work out how I can access the two screws on top with it in place.
Am I missing something or is this a bigger task than I thought?
Also, there appears to be a sealant used in place of a gasket, does this need to be redone on replacement?
Paul
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RS2 Ragusa Green and a Sunbeam Lotus for the summer weekends.
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