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Think there is a resistor type thing near your horns, if you looking at car from front it's under the right side of the front bumper has three wires going to it
on my car (with air-con) if you turn on the air-con the radiator fan starts. i would say stage 1 speed.
Does your air-con switch light up when pressed?
first thing i'd do is remove the plug from the sensor (at bottom of radiator) and bridge the wires to see if the 2 speeds work. I think it should have 3 wires, 1 wire should be live? find that then bridge to the others.
If you have A/C and the fan works on 1st speed when you put the A/C on then the resistor pack is OK. Also the resistor pack itself is bulletproof.
The low radiator fan speed (known as 2nd speed) is controlled by the temp sensor screwed into the bottom of the radiator. Check the wires to the sensor as they are very exposed and get corroded up. Try joining pins 2 and 3 and the fan should kick in at 2nd speed, if it does the wiring's fine and the temp sensor has gone.
If you join pins 1 and 3 you get 3rd speed, ie max speed otherwise referred to as OMG speed
My fan does not kick in when the AC is switched on.
My AC does not work anyway, dont know if it needs re-gasing or if theres another problem with it.
I'm not bothered about the AC, just want the fan to kick in before the OMG speed as you mention lol.
I will check the temp sensor as you have mentioned.
Does the resistor pack control the 2nd speed fan? Im wondering whether the resistor pack i fitted is faulty.
Thanks
Originally posted by johne
If you have A/C and the fan works on 1st speed when you put the A/C on then the resistor pack is OK. Also the resistor pack itself is bulletproof.
The low radiator fan speed (known as 2nd speed) is controlled by the temp sensor screwed into the bottom of the radiator. Check the wires to the sensor as they are very exposed and get corroded up. Try joining pins 2 and 3 and the fan should kick in at 2nd speed, if it does the wiring's fine and the temp sensor has gone.
If you join pins 1 and 3 you get 3rd speed, ie max speed otherwise referred to as OMG speed
The resistor pack controls both the 1st speed fan - if your A/C was working and the 2nd speed fan. It's not used for the 3rd speed fan.
Something else to check is the relay for the 2nd speed fan. It's the bottom right "214" relay in the main fusebox, confusingly labeled 1st speed fan relay on the top of the fusebox. Substitute another 214 relay or the horn relay temporarily to see if 2nd speed now works.
You can check the resistor pack by checking the resistance between the terminals. It's a very low resistance so most meters will see the resistance as zero or close too it but that's fine because your problem looks like there's high resistance, ie a broken wire or resistor pack.
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