jonathanp
Active Member
From memory no it is not normal , you either have a problem with a switch or relay in the air con circuit or possible your engine could be overheating ? I am not sure but I think there is another thermal switch in the cooling system that switches the fans on independantly if the water gets too hot . Is the fan running as soon as you switch the engine on after being parked all night or just after a few minutes driving ? Regards Jonathan
broadoakboy
New Member
Check the coolant level, mine was doing this, it's a fail safe if the engine gets too hot. To temporarily stop the AC fan running i've had to take the fuse out. Going to plug in a diagnostic tool to see if I can reset it. I'll let you know what happens
martinhollings
New Member
the air con fans will only run it the coolant temp goes above 106* it uses the same coolant temp sender and is controled buy the ecu
With the engine stone cold, as soon as i start ,the fan comes on. Temp is all normal on dashboard and when i pull relay out of the engine bay fuse box the fan stops and then starts straight awayupon replacing it. . I have tried swaping the relays over but it make no difference, the fan just wants to run. What else gives it the command to run?????
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broadoakboy
New Member
As martinhollings says, your engine got too hot. Possibly an airlock in the sytem pushed the coolant out. You need to reset the ECU via a diagnostic tool, that will tell the AC fan/sensor the engine temp is ok.
Check your coolant level. Top it up if needed and run the engine with the reservoir cap off for a little bit.
If after doing that you still have problems, suspect a bigger issue.
Check your coolant level. Top it up if needed and run the engine with the reservoir cap off for a little bit.
If after doing that you still have problems, suspect a bigger issue.
