Guest, 🚨New Stock alert: Premium CUPRA valve caps now available in the store 👉 Order now from the merchandise store
I realise this is a very late answer, but maybe it'll help somebody.
The radiator fans are triggered by a thermoswitch in the radiator itself. You can remove this and stick it in a saucepan on the stove, with a thermometer, and check that it performs as specified:
1st speed
on: 92...97 °C
off: 84...91°C
2nd speed
on: 99...105 °C
off: 91...98 °C
Both fans should run at low speed when the air cooling compressor is engaged ("snowflake"). This is to pull air through the refrigerant condensor unit, mounted in front of the radiator, all the while the air cooling circuit is active. The original equipment does this by feeding 12V to the fans through a big resistor in each one, which cuts the power delivered to each fan, making them turn slower.
The fan control box under the battery tray combines the signal from the Climatronic unit with the output of the thermoswitch in the radiator. The Nime box replaces that control box, and does away with the resistors that have failed by controlling the power output to the fans using a switched-mode controller.
So if the Nime box makes your fans work when the airconditioning is selected, then it and your fans are working. I'd suspect the thermoswitch in the radiator, or the wiring between radiator and Nime box.
quattrojim wrote
All three input connections that went to the fan control box should now go to the Nime box.
cheers Willie.
That means to me then:
with engine at tickover -> no fans -> CORRECT
with engine at tickover & aircon on -> both fast speed pulse -> WRONG -> should be constant slowspeed
with engine at tickover & aircon in auto mode -> both fast speed pulse -> WRONG -> should be constant slowspeed
is that correct?
and if so i need a fix
Yupcheers Willie.
That means to me then:
with engine at tickover -> no fans -> CORRECT
with engine at tickover & aircon on -> both fast speed pulse -> WRONG -> should be constant slowspeed
with engine at tickover & aircon in auto mode -> both fast speed pulse -> WRONG -> should be constant slowspeed
is that correct?
and if so i need a fix
How much were you for the unit and from where?Yes mate, needs a fix, mine got done today £235
Jon
Yup
How much were you for the unit and from where?
The old one worked for me but I had ABS issues. They have said to send back my old one with £20 and they'll update it. should really do this as its cheaper than the £135 for the unitok thanks.
didn't see a clear easy list of what should be looked out for, and no i know.
arse & pants.
Right, does this nime box actually work now? as i know some have had issues & it has been modified.
Thank youThe unit was £135 not sure where from as the garage ordered, I think they use gfs, 1.5 hours labour.
Got mine done at Midland VW