VS Thermo Fan Fault

[Superjet0701]

Hi to all,

I need some help with the thermo fan on my VS 11 V6 Calais, over the last 3-4 months I have replaced the following, water pump,

thermostat, temp sender, flushed and replaced coolant and bled cooling system correctly, all has been going well untill a few nights

ago when I was sitting in Maccas drive thru i had the high temp alarm beep at me only to realise that the temp had gone through the roof!!!

I pulled over to find that my thermo fan was not working unless I had the air cond turned on, in which then the temp runs normal. So the next day I went and purchased a new

coolant temp sensor and replaced it but the thermo fan is still not working without the air cond turned on.

I have searched all commodore forums for an answer to why this would happen all of the sudden, but none of them have an exact answer to my problem, so anyone that can help

would be greatly appreciated!!!

 

[VS_Pete]

No offence mate, but can you please break your post up into some paragraphs as it makes it a lot easier to read.

Cheers

 

[social]

VS pete 1,
ive seen u say that in 2 posts now, wats with not being able to read it clearly?

 

[VS_Pete]

Must be just me and I haven`t even had a beer yet.lol

 

[Superjet0701]

Hope that helps Pete my first post so thanks for the advice, it certainly

makes it a bit easier to read!!!

Thanks Clint

 

[VS_Pete]

And eye sight not what it used too be. lol
Cheers Clint thanks for looking after the old farts.lol

 

[moff_man]

could be 3 things in my opinion...

1. fuse or realy blown and yes the fan will work with the a/c on but you will not get high speed
2. temp sensor which one did you replace there are 2 one for the temp gauge and one for the ecu (computer)
3. wiring issue from the sensor to ecu or ecu to fan issue or even a ecu issue

i do recall having this issue on a later model car but carnt for the life of me remember what it was, i think it was just a realy.

 

[Superjet0701]

I have swapped the horn relay with the thermo fan relay, but no difference

I have replaced both temp sensors, Guage and thermo fan sensor

I starting to believe that it is related back to the ECU?? may have to wait

until the local autolec opens back up next week??

Thanks for your advice

 

[hako]

Have a look at this post:
http://forums.justcommodores.com.au...ermo-fan-sensor-air-con-electrical-fault.html

It shows a similar problem to yours and a simple way of checking if the fault is in the ECU plus it may save you a costly visit to the auto-elec.

 

[Superjet0701]

Thanks Hako, I will have a look at it tomorrow and keep you updated with how I go!