I think 2 mate but il have to check in morning.. when should the low speed fan actually kick In ?? ... I know the full speed one works cuz sometimes I can still hear it cooling the engine after I've turned it off 

Both fans will be dual speed I think, and they are usually wired in parallel, so both should do the same thing (low or full speed) at the same time.

I'll check wiring diagram tomorrow to be sure of what's what. It may be that the smaller of the two is single speed, telltale sign of that is there will only be two wires coming out of the motor housing rather than three.

 

Coolant temperature or refrigerant pressure can trigger the action, which is why switching on A/C is a convenient check, as the pressure builds fairly quickly in warm ambient temperatures. 

 

Talk to you tomorrow. 

 

 

Sound mate... thank you 👍

12 hours ago, Okvrsmk1 said:

when should the low speed fan actually kick In ?

On an Octy, when you turn the air con on (or have Climatronic in Auto or demist mode)

Having looked at wiring info and parts info, it does look like your car is equipped with two dual-speed fans, wired in parallel.   They should both start up in low speed after a short time once A/C is enabled. 

 

Is it the Climatronic system or manual A/C? I suspect the former?

 

To confirm low speed function/disfunction you can unplug the loom connector from the radiator thermoswitch, and link pins 1 and 2, red/white to red wires. As long as  the relevant fuse is intact (giving 12V on pin 2), then both fans should start up at low speed. 

 

 

 

Edited 13 August, 20214 yr by Wino

Wino you lost me at loom connector 🤣 but I'm gonna have a look in to it and see what I can do... thanks pal 👍

 

7 hours ago, KenONeill said:

On an Octy, when you turn the air con on (or have Climatronic in Auto or demist mode)

Thanks Ken... il check it out 👍

31 minutes ago, Okvrsmk1 said:

Wino you lost me at loom connector 🤣

 

This thing here, with the wires. 

 

10 minutes ago, Wino said:

 

This thing here, with the wires. 

 

🤣 top man ... pics are better for me.. gonna give it a go tomorrow 👍

And, in Wino's post, based on my understanding of the Octy AC, the smaller (left hand) fan (on the right of that shot from the front) has a separate live feed from the AC power, so is always on low when the AC is on, regardless of what the radiator thermoswitch and the large fan are doing.