Ford Fusion radiator fan problems

Our Ford Fusion (2003 model) engine radiator fan has just stopped working but kicks in when we turn the A/C on (and the water leaks out of the pressure cap on water bottle). We've just bought a new thermostat and had it fitted at the garage and it's still the same ... does anyone know what the problem could be?

Asked on 2 August 2016 by Richard Gorman-Jones

Answered by Honest John
I'd guess that it is separately switched when the a/c is used but the engine block temp sensor/sender switch that normally switches on the fan has failed.
Similar questions
I own a 2005 Ford Fusion 1.4 manual petrol. It keeps losing power in second gear, accompanied by a burning smell. I heard two loud bangs in the rear of car as well.
On two occasions, over the space of two weeks, the steering on my Ford Fusion has suddenly become heavy. Three warning lights come on (oil, ignition warning and engine warning light) and after about five...
I am looking for a Ford Fusion automatic, but the adverts don't seem to distinguish between full and semi automatics. Can you help?
Related models
Versatile interior. Easy to get in and out of. Reasonably sized load area with no lip. Four-star crash test rating, economical TDCI diesels.
 

Ask Honest John

Value my car