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two front radiators - both aircon?

X-UFO
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X-UFO Member

X-UFO

Posted
Posted (edited)

Hi,

Just a quick question.

When I have the aircon switched on only one fan in the front arch comes on (passenger side, RHD UK).

Is that right or should both fans be on?

Is the other radiator on the other side in the arch for the cooling system or part of the aircon and should also run the fan

with the aircon?

Thanks for any help.

2001 996 Carrera2

Edited by X-UFO
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Loren Member

Loren

Posted
  • Admin
Posted

:welcome:

The fans have two speeds.

One that turns both on at low speed when the coolant temperature gets to certain temperature.

The second speed is high speed that turns on both whenever the AC is on and if the coolant temperature exceeds a preset level.

So, whenever one fan is on - both should be on.

If that is not the case check the fuses, swap the relays to confirm. If the problem still exists then you likely have a bad ballast resister

Details of all these have been discussed here in other thread so try a search.

  • Upvote 1
X-UFO Member

X-UFO

Posted
  • Author
Posted
:welcome:

The fans have two speeds.

One that turns both on at low speed when the coolant temperature gets to certain temperature.

The second speed is high speed that turns on both whenever the AC is on and if the coolant temperature exceeds a preset level.

So, whenever one fan is on - both should be on.

If that is not the case check the fuses, swap the relays to confirm. If the problem still exists then you likely have a bad ballast resister

Details of all these have been discussed here in other thread so try a search.

Loren,

Thanks for the reply. After a good search, reading your reply and going out to the car and swapping relays, checking fuses and making sure it isn't working.

Going dark now, next step is to check the voltages before the series resistor and compare with the other side, I'll do that tomorrow. Maybe the resistor needs replacing.

Your reply really helped in guiding me and I much appreciate your reply - Cheers. :D

Ian

(in the rainy UK)

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