I have just repaired my Aircon head temp fan - after buying a new fan from CZP only to find it was no better than my old one (wouldn't spin up and was noisy if helped) and the adjustment grub screw wouldn't budge. I have replaced it with a 12v computer fan - from Jaycar. Parts Required: Fan - Jaycar 40x40x10 12v - code YX2503 - $16.95 Resistor - Jaycar code RR2538 - $0.44 ** Cable ties Tape **Note - I used the above resistor which is 33 ohm, you might need to go a bit higher as I think its revving a bit too high still. Will experiment when I have time to find a better resistor to use. Sorry - no pictures of the first steps..... To start - remove the old fan from the roof behind the map lights. Then unclip the black shroud with the sensor from the alloy part (4 plastic clips) then cut away the 2 wires from the loom leading to the circuit board on the alloy part - blue and black. These are the fan power wires. You are then left with this piece - with the sensor, and the loom. Turning it over - cable tie the Jaycar fan onto the frame as per the below photos Solder and heatshrink the wires to the existing loom - with the resistor on the negative leg. Black to the resistor to the black on the loom, and red to the blue on the loom. Now put some tape around the edge to seal the fan to the body of the sensor to ensure it pulls air past the sensor, not from the sides Test and refit - its just like stock only it actually spins up when you start the car and no more rattles :zlove:
Well done mate. I think Zcar91(in ACT)did something similar a couple of years ago, but like many "fixes" they seem to get lost with the passage of time. Why did you need the resistor(I'm an electronics vacuum)?
Cheers.... I did see a note about someone using a dick smith fan which gave me the idea..... The resistor is to slow the fan speed down as otherwise it does its best to suck your hair into the little intake vents its also quite noisy at full voltage.
If you want an adjustable fan speed in this mod, use a potentiometer instead. Save soldering/desoldering when you have to make adjustments. Good work. I've never had one of these out before, but the one in my Z is playing up occasionally.
Thers a fan up there? I never knew. Nice work. Like the step by step. This is the sort of stuff I like to see posted on the forum. Keep it up.:zlove:
I always wonder whats in there between 2 targas!! Uumhh. I was thinking to put a dvd screen or reverse camera screen there. But i m not an electrician. So have to wait for someone to show me.
Is the power source 12V or 5V? I know battery voltage is 12V, but was under the impression that most sensors ran off 5V. Or is the resistor knocking down the voltage from 12V to 5V?
Its a 12v power supply to the roof on the Blue/Black. I'm using the resistor to drop the voltage down to slow the fan speed to keep it quiet. I haven't checked exactly what it is at the fan now....will have a look toinght to confirm.
You should measure the voltage drop across that resistor now. THEN buy a 5 w zener diode with that voltage to put in its place. It will not get anywhere near as hot and is way more stable.
