VS Calais Thermo Radiator fan wont turno off!!!!!

[calais_SC6]

Hi Guys,

my thermo fan on my VS Calais wont turn off, checked all fuses and changed the relays around with no luck.

I then decided to unplug the coolant temp sensor connector next to the thermostat and still it had no effect.

Checked for error codes and came up with nothing.

If l pull the relay off, then the fan will turn off or if l switch the car off.

I am puzzled here, any help would be great.
cheers

[calais_SC6]

anyone please?

[calais_SC6]

b u m p?? Has anyone experienced this before? I swapped the lo fan relays around with no luck!

[tt460]

Since it comes on when you turn on the AirCon perhaps something funny is going on the AirCon side of things

[keygen]

are there 2 sensors at your thermostat ?

my vs v6 series 1 has 2 . 1 for the gauge on the dash & the other for ecu .
which 1 ( if u have 2 there ) did u disconnect ?

[calais_SC6]

l disconnected the one that goes near the thermostat, not the gauge sensor. No matter if the AC is on or off it still stays on??

[tt460]

have tried pulling the AC fuses and relays ?

[VSSECO]

^^^ What he said. It'll be something to do with the piece of ____ climate control unit. My parnters car does the same thing... but the climate control unit is always cutting in and out so the fan cuts in and out too.

[calais_SC6]

but the climate control unit is switched off which means the fan should stay off for the radiator?? Maybe could be a wiring or a ECU problem>?

[BlackVXGTS]

Does the fan turn on as soon as you start the engine or does it take a minute or so before it starts up? I have the latter problem although mine is a V8 not a V6. If it turns on straight away it's either a coolant temperature sensor problem (in which case you should have a DTC set) or a wire that is shorting to earth - circuit 304 from the PCM or the pressure switch. If it turns on after a minute or so I think it means a faulty A/C pressure switch. However, to replace the pressure switch you need to discharge and recharge the system afterwards. I haven't been prepared to do this for the moment.

[calais_SC6]

Does the fan turn on as soon as you start the engine or does it take a minute or so before it starts up? I have the latter problem although mine is a V8 not a V6. If it turns on straight away it's either a coolant temperature sensor problem (in which case you should have a DTC set) or a wire that is shorting to earth - circuit 304 from the PCM or the pressure switch. If it turns on after a minute or so I think it means a faulty A/C pressure switch. However, to replace the pressure switch you need to discharge and recharge the system afterwards. I haven't been prepared to do this for the moment.

Hi mate,
problem has come back again, as soon as the ignition is on the fan comes on, l think it might be the temp sensor?
Because now that the fan problem has come up the a/c compressor isn't working, any help would be great....
oh l might just go to the f&%kn electricians and they will charge me an arm and leg
thanks

[Cheap6]

Probably not great to post in the two different threads but this is the one I'm reading atm .

This may help:

http://www.memcals.com/pdf/VSV6%20Au...%20Diagram.pdf

[calais_SC6]

that gives me a headache, only if l did a course in elec autos.....

its got me confused as to why it has started doing what it was doing b4....

[hako]

The fans are probably coming on because the the A/C has lost it's gas....this will set a fault and the ECU will then turn the fans on in a scattergun approach to saving the engine from self-destructing.

[calais_SC6]

hi hako, just checked the ecu fault codes and nothing came up, but the fans still on, l will go in the morning and see what the mechanic has to say...

thanks for your help.

[epracer]

how did you go with this problem as its happening to me at the moment it was running on for nearly 2-3 hours the other day after driving to a mates place and had to remove the realy for it to switch off

[m62vpute]

opps mods please delete