my mums 5 series (m reg petrol) was fine until this morning when my stepdad revved fuck out of it to get it warm,

the heater is now blowing cold air and the car is overheating, am i looking at water pump or thermostat? if the later how can yoiu tell if a water pump is knackered?

thanks.

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water pump would be leaking coolant mate i belive

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I would personally go with the thermostat fella. Sounds like its staying shut. Cheap, easy fix Then if its not that, do the water pump.

Water pumps only leak if the bearings fail, they can break up internally (fins break) and you wouldnt get a leak at all, just no coolant circulating.

But as i said, do the thermostat, then if that doesnt work, water pump it is!

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try gsf for the thermosat

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Ford Fiesta 1.6si 5Door Mods Sony flip down cd player,Alpine Type s compent speakers Tweeters in colour coded mirror bases Kenwood 17cm speakers In Rear shelf,Splx 10inch Sub In boot 600watt Splx on passanger footwell in custom Bulid,Richbrook Ford Gear Knob,Green Cotton Air Panel Filter,Tom brown hat on rear shelf,clear side repeaters,ripspeed car mats,rear head rests rear small ford badage,ditgal volt gauge in front heater vent,Escort gti rims

Coming soon
mk4 wiper arm,laguna spilter,grey centres in the wheels 35mm drop,screen bulit into dash dvd player in glove box,stanless steel back box Mondeo dics and calipers,Rear disc conversation,Black roof lining with bulit in leds,Blue limation on dials,white dials & heater vents,graphti bonnet

stat it was.

horrible car to work on, silly viscous fan in the way that took 2 special tools to remove.

pain in the arris to bleed n'all.

thanks guys.

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www.Scartgamer.com