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.

Running hot....!!!!!

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Old 10-01-2014, 08:41 AM
  #11  
88 orangepeel notch
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Make sure you have all the air out of the cooling system and verify if thermostat is opening. If not, replace thermostat, or test it first. If that checks good, then start looking at the water pump.
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Old 10-01-2014, 09:39 AM
  #12  
87droptop
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Originally Posted by 88 orangepeel notch
Make sure you have all the air out of the cooling system and verify if thermostat is opening. If not, replace thermostat, or test it first. If that checks good, then start looking at the water pump.
How do i get the air out of the cooling system??
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Old 10-01-2014, 11:22 AM
  #13  
88 orangepeel notch
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On a cold motor, I fill the radiator not quite full, start the motor, let it warm up. When the coolant in the block gets up to 180', 190' the thermostat should open and allow the coolant to circulate. The level in the radiator will drop, so have some extra ready to slowly add. You'll see bubbles and air pockets coming out the rad. neck. When level seems to hold at about 2" below neck, throw the cap on and drive the car for 10 min. Keeping an eye on the temp gauge, just in case.

Park the car and check level at the reservoir, add THERE if needed. don't remove the rad. cap. Just saying as I don't know your "skills" (as a reference to a great movie.)

Last edited by 88 orangepeel notch; 10-01-2014 at 11:28 AM.
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