hi ive lost my cooling fans on a peugeot 406 1.8 1999 took it to an auto electrician who told me the fan motor had shat itself so i got a second hand one fitted it and left motor ticking over to get up to the 90 temp but fan didnt start but if i turn the air con on then the drivers side fan kicks in so the fan does work, does anyone know which fan should come on first the drivers or the passengers as i seem to remember seeing that one fan controls the other i.e one comes on at 90 then if its not cooling still the other kicks in ive got a mate to run a diagnostic box through it but it said all was fine????