Vt thermo fan fault

[satos]

I was driving the other day and I put the aircon on.After about 10 minutes the temp went right up.I stopped the car and had a look under the bonnet.There was no signs of overheating like steam etc.The coolant level was right on specs also.I started the car after 10 minutes and drove off.To my surprise the temp started dropping down quick to back to normal.I had the ac turned off.Arrived home and I got out my gregorys service manual.I had a bit of a read and it said that when you switch the ac on regardless of engine temp, both therm fans should operate.Back under the bonnet again and found that only the right fan was operating(looking from the front of the car).After further reading I made up some jumper leads and tested the fan motors one by one by connecting directly to the battery.Both fan motors were working.The question I want to ask is would the relays be causing this problem.Gregorys sugests it could also be the bcm and ecu and I should take the car to a workshop with a diagnostic computer.Any advice would be appreciated.Thanks.

 

[accentstencil]

I was driving the other day and I put the aircon on.After about 10 minutes the temp went right up.I stopped the car and had a look under the bonnet.There was no signs of overheating like steam etc.The coolant level was right on specs also.I started the car after 10 minutes and drove off.To my surprise the temp started dropping down quick to back to normal.I had the ac turned off.Arrived home and I got out my gregorys service manual.I had a bit of a read and it said that when you switch the ac on regardless of engine temp, both therm fans should operate.Back under the bonnet again and found that only the right fan was operating(looking from the front of the car).After further reading I made up some jumper leads and tested the fan motors one by one by connecting directly to the battery.Both fan motors were working.The question I want to ask is would the relays be causing this problem.Gregorys sugests it could also be the bcm and ecu and I should take the car to a workshop with a diagnostic computer.Any advice would be appreciated.Thanks.

Try swapping relays around.

 

[WAGON MAN]

What happend to your Max Ellerys? Now Gregorys.........

Check the Fan Fuse and relays...

 

[satos]

What happend to your Max Ellerys? Now Gregorys.........

Check the Fan Fuse and relays...

I had an old max ellerys(excellent book) for the first car I owed which was a vc commodore and just mixed up the publishers.I have checked the fuse and swapped the high beam relay for the fan low speed relay as per GREGORY"S manual instructions but the right fan will still not not rotate.

 

[Doctor Bob]

I should take the car to a workshop with a diagnostic computer.

Answered your own question.

Rob