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Coolant over heating 

 

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 Post subject: Coolant over heating
Posted: Sat Nov 13, 2010 4:02 pm 
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Ride: 98 XH2 Ute

Location: Toorak
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Recently the coolant over heating light has come on and has been running hot a f**k!

pleanty of coolant in,
not leaking,
changng the themostat 2mrw but realised only one of the fans was working at the front? is this somethng i ca fix easily? or am i better o forking out the extra cash and paying an auto elec to do it?

 

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 Post subject: Re: Coolant over heating
Posted: Sat Nov 13, 2010 4:16 pm 
Getting Side Ways
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Turn the air con on and then check the fans.... You will find that both fans will be blowing flat out. If not, check fuses and relays.
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 Post subject: Re: Coolant over heating
Posted: Sat Nov 13, 2010 4:26 pm 
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over heating light?

as in when the temp gauge goes past the red and light comes on OR a red symbol down the bottom that looks like a radiator?


if the second one came on it means the coolant is LOW not overheated.

 

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 Post subject: Re: Coolant over heating
Posted: Sun Nov 14, 2010 9:48 am 
Getting Side Ways
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Does the XH even have a low coolant warning on the dash?

Its either your fan relays or your fans. I'm more inclined to go with the latter.

When it does get hot do both fans come on or just the one fan? If its just the one does it speed up and blow heaps hard or does it just potter along doing its business as if the engine is cold?

Changing them is only a 10 minute job.
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 Post subject: Re: Coolant over heating
Posted: Sun Nov 14, 2010 10:21 am 
Getting Side Ways
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There may also be a hairline crack in the headertank letting pressure but not necesarily fluid out, or could be faulty coolant temp sensor. But like I said, turn your A/C on which will make the thermos run at full power, if they dont do it, then check electrical things as previously mentioned.
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