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        General >> Problems >> fans not running
        
(Message started by: a900one on Mar 21^st, 2019, 12:04pm)

Title: fans not running
Post by a900one on Mar 21^st, 2019, 12:04pm

Had the temperature gauge going up a bit so thought must be the thermostat playing up. Have checked and the fans are not running with the aircon on and the aircon compressor is not coming in. Have checked the fuses and they are ok. Any thoughts please, Gerald.

Title: Re: fans not running
Post by Simmo on Mar 21^st, 2019, 12:28pm

Wiring issue..same as mine I guess which is awaiting a 'Tompion' fix!
I have got a switch in the car with a direct feed from the battery to one fan an IF I use the car I have it on full time.
Be very watchful as my rad went and finding a new one was not easy or cheap!
You can check the fans themselves are OK by just putting 12v to them BUT IF you think of running both you will need much heavier cable as there is a lot of power required. I initially tried with just some cable I had and things got very warm very quickly!! One fan will do the trick for normal usage.

Title: Re: fans not running
Post by a900one on Mar 22^nd, 2019, 10:01am

Just checked and there is very little gas left in the aircon, so the compressor wont come in and that may be why the fans are not running. Time for a regas.

Title: Re: fans not running
Post by Scorpio_Mike on Mar 22^nd, 2019, 11:50am

on 03/22/19 at 10:01:04, a900one wrote:

Just checked and there is very little gas left in the aircon, so the compressor wont come in and that may be why the fans are not running. Time for a regas.

You might well have a leak in the A/C system.
I think an A/C service company will do an integrity check before attempting a re-gas and will refuse to refill if there are leaks - think that is the law these days.

Title: Re: fans not running
Post by a900one on Mar 24^th, 2019, 6:14pm

Gas now ok, well in the green, but the compressor is still not running >:( > Do I need to do a reset on the climate control, not done one ever on the car. All was ok when I put it back on the road in November. I have tested one of the fans which is ok, d/s one. What is the green relay for behind the D/s headlight, is it to do with the fans ?.

Title: Re: fans not running
Post by Tompion on Mar 24^th, 2019, 8:44pm

Yes green relay is for fans. I don't think a reset will help.

If you want to test the fans, disconnecting the engine coolant sensor should make them come on.

if you have OBD software you should be able to test the fans from there.

Title: Re: fans not running
Post by a900one on Mar 29^th, 2019, 11:20am

I have powered the aircon compressor and now the fans are working.
Checked the aircon pressure and topped up, and all is working as it should now. I have got a new thermostat if the temp plays up again, but may have been due to the aircon problem. thanks for the help.
Gerald.