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.

Need Help A.S.A.P!!!

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Old Apr 7, 2010 | 09:29 AM
  #1  
84svo5.0's Avatar
84svo5.0
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Angry Need Help A.S.A.P!!!

my 5.0 keeps overheating i have put a new radiator with electric fan and a 160 thermastat i have burped it and everything...if any can help id appreciate it
Old Apr 7, 2010 | 09:44 AM
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Originally Posted by 84svo5.0
my 5.0 keeps overheating i have put a new radiator with electric fan and a 160 thermastat i have burped it and everything...if any can help id appreciate it
You may have put the thermostat in backwards. Make sure the SPRING is facing the engine block, not the radiator. Only thing I can think of.... And, is the fan cycling on and off after it warms up?
Old Apr 7, 2010 | 09:52 AM
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I have the thermostat in the right was and yes the fan is cycling
Old Apr 7, 2010 | 11:26 AM
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hows the condition of the water pump? is it circulating the water? start the motor with the radiator cap off. let the motor come up to temp and see if the water in the radiator gets hot.

is this a recent problem? did you just get the car this way?
Old Apr 7, 2010 | 12:39 PM
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ya i just got it drove it all the way home no problem did a launch in it and it started overheating that when i replaced everything and i ran it lastnight with the cap off and like you said, still got hot so i got a new water pump on the way.
Old Apr 7, 2010 | 12:56 PM
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Change the thermostat to a 180 or a little higher. Your thermostat inst closed enough for your fan to cool the radiator.
Old Apr 9, 2010 | 07:05 PM
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Originally Posted by 98MustangGT46
Change the thermostat to a 180 or a little higher. Your thermostat inst closed enough for your fan to cool the radiator.
i heard u can just run it without a thermostat and it will run cooler
Old Apr 9, 2010 | 07:22 PM
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If you run it without the tstat it will run cooler, but your miles per gallon will take a hit
Old Apr 9, 2010 | 07:28 PM
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Originally Posted by conejo172
If you run it without the tstat it will run cooler, but your miles per gallon will take a hit
y would it waist more gas
Old Apr 9, 2010 | 08:17 PM
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Originally Posted by omar_lpz
i heard u can just run it without a thermostat and it will run cooler
Sometimes you can. My other car i had to change the theromostat cause it was too low and the fan didnt have enough time to cool it down do too it be open more frequently.



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