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.

Leaking Coolant

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Old 02-10-2008, 06:18 PM
  #1  
mckibben2890
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Default Leaking Coolant

I have a 1990 5.0 lx- my coolant is leaking from the right side of the car in line with the 5.0 emblem on the side. its coming out directly on top of where the rear brake lines run (from above). its also leaking on the passenger side where the passengersfeet would be...
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Old 02-10-2008, 06:19 PM
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LTnone
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Default RE: Leaking Coolant

Your heater core died.
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Old 02-10-2008, 06:32 PM
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mjr46
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Default RE: Leaking Coolant

is it coming out of the rubber gommet opening on the firewall on that side?? if so like mentioned above it's most likely a heater core
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Old 02-10-2008, 06:50 PM
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HACKGT350
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Default RE: Leaking Coolant

sounds like you need a new heater core. have fun with that one
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Old 02-10-2008, 07:33 PM
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mjr46
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Default RE: Leaking Coolant

pressure test the system and verify where the leak is if you can't narrow it down.. but my guess is it's obvious
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