5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Water guage....

Old 06-29-2006, 02:12 PM
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91LXStang2727
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Default Water guage....

When i am at idle my water temp rises but when im moving it goes back down to normal....Could this be anything else besides my fan? And how would i tell if it was my fan? thx
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Old 06-29-2006, 10:33 PM
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Default RE: Water guage....

Any1?
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Old 06-29-2006, 10:39 PM
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91lxstang
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Default RE: Water guage....

i got the same prob....not sure if its a prob though
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Old 06-29-2006, 10:41 PM
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silver91gt
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Default RE: Water guage....

if you have the stock fan, your fan clutch is going bad, and not spinning the fan at idle.
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Old 06-29-2006, 10:46 PM
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Default RE: Water guage....

My fan spins at idle but im thinking maybe its the radiator.
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Old 06-29-2006, 10:48 PM
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Default RE: Water guage....

Could be a flow problem in the radiator. What do the fins inside it look like. How old is it?
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Old 06-29-2006, 10:51 PM
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Default RE: Water guage....

The fins seem pretty straight and its a aftermarket radiator but i bought the car with it on there so i couldnt say for sure how old it is.
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Old 06-29-2006, 10:55 PM
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Default RE: Water guage....

your heater core might have a leak
your rad cap may not be holding pressure
your thermostat might stick a little
but I still think its the fan clutch.

when the motor is hot and shut off, try to spin the fan by hand, it should have some resistance.
if it spins freely it is bad.
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Old 06-29-2006, 10:56 PM
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Default RE: Water guage....


ORIGINAL: 91LXStang2727

The fins seem pretty straight and its a aftermarket radiator but i bought the car with it on there so i couldnt say for sure how old it is.
I meant what do they look like on the inside. Open the cap and look in.
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Old 06-30-2006, 12:08 AM
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Default RE: Water guage....

The fan does have a little resistence and im going to take look tomorrow morning inside the radiator but what exactly im i looking for?
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