is the car over heating ?Hi Scaramanga!
Sorry, I should have made my opening post clearer!
It's the main radiator fan I am referring too. I am looking for the location of the relay of the main radiator fan.
is the car over heating ?
the fan will only kick in after the water temp gets too hot and in this weather that will take a long time
Thanks,Unless you have a faulty coolant sensor (usually the one at the rad base) the fan won't come on unless you are stuck in traffic on a hot summer day.
Thanks so much!aas far as i can remember it the one circled in yellow
the chances are that's not your problem
as others have already said the chances are it's not getting up to temp to switch the fans on or the radiator temp sensor is faulty
the coolant fans don't kick in unless the coolant temp reaches 80 degrees c or above, if you have an OBD adaptor and something like the torque app for android you can easily monitor the coolant temps and see if the fans kick in once the temp reaches 80 degrees c
unfortunately things get a little more complicated than just a fan relay as the air conditioning fan is tied into the equation
there are 3 relays that control the fan switching
the 2 you see in the picture ( black one controls AC fan and the grey controls coolant fan )
the third relay is buried inside the same fuse box and is not a changeable part without a bit of surgery
between the 3 relays they control which fan comes on and at what speed
if the car is not overheating the chances are it's not getting up to temp high enough to kick the fans in
everything i talk about here is to do with the 2.2 diesel it should be the same or very similar for the 1.4 petrol with AC
Yes, I have! Fan works perfectly.Have you confirmed that the fan is working? - via a direct/temporary power feed.
I have done this. I put wire from the 3rd pin on the bottom of the black fuse, then I attached it to metal on the engine bay to ground it. Now my fans are running 24/7..you could pull out the relay and momentarily short the 2 large pins in the fuse box which would simulate the relay switching
if it is the relay that's faulty the fans should kick in
Yes, A/C does work grand!does your AC work ?
I see. Do you think is it worth replacing the Black A/C relay?by rights when the AC is on and working both fans should spin
the 3 relays i mentioned earlier control which fans spin and at what speed, what they do is either divide the voltage to both fans ( 6 volts to each fan ) to spin them at half speed or provide 12 volts to each fan depending on weather the engine temp has reached 80 degrees c or above ( coolant fan ) or the AC pressure sensor has reached a particular pressure level which then switches the AC fan in at full speed and disengages the AC compressor
the 2 relays you can see in the fuse box are for the AC ( black one on the left ) and the radiator coolant fan ( grey one on the right )
the 3rd relay which is inside the fuse box which you cannot see is linked to the other 2 relays and switches between ground and 12 volts
It's fuse 18 indeed! I have replaced that also! Still no good unfortunately.the main fan fuse should be in the fuse box under the bonnet either fuse 18 or 19 i think but it might be worth checking em all
you say the AC works just fine
does the AC fan kick in and out as it should while the AC is on ?
i'm not sure what you mean by " I put wire from the 3rd pin on the bottom of the black fuse, then I attached it to metal on the engine bay to ground it. "
which black fuse ?
if the third relay inside the fuse box packs in the fan should still spin but only at half speed
i think your next thing to look at are the engine temp coolant sensors, these are not thermostats so shorting them out won't do you any favours and are wired to the ECM
how you would test these is another matter
reading through the thread again..
when you temp reaches 90c your temp gauge should be around half way if it's going straight to the top that could be an indication of a faulty sensor
check with your obd tool again and see what temperature sends the temp gauge to the top
like i said 90c should really be about half way on the temp gauge ( ish ) but certainly not at the top of the reading
armchair diagnostics is nigh on impossible
Yeh, from memory it was 100 degrees with the gauge up to the very top. But I see what you're saying.. I'll double check this tomorrow anyway..I doubt if the top of the gauge is 100C as the coolant can get hotter than that before it boils. But of course it could be as it's not meant to get to boiling point.