V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

Coolant leak behind passenger side motor mount

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Old 11-05-2012, 02:52 AM
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petrock
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Default Coolant leak behind passenger side motor mount

I'm chasing a coolant leak on my wife's 98' 3.8L. Every few weeks I have to add about 1 gallon of coolant. I finally got time to look into it today. The bottom of the motor & tranny bell housing is covered in coolant and grime so its kind of hard to see where the source is. So I hooked up a radiator pressure tester and found the leak coming from behind the passenger side motor mount. Or at least that is where it seems to be coming from. Its really hard to see. I've verified that it is not the head gasket above the motor mount. I'm stumped where the coolant could be coming from though since it looks like only the oil pan gasket is behind it. Is there a freeze plug hidden there? Any ideas? Thanks in advance...
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Old 11-09-2012, 03:05 AM
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bump bump...
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Old 11-17-2012, 06:28 PM
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I broke my wifey's compact mirror and was able to get it in-between the motor mount and the block. Yes, there is a freeze plug behind the motor mount and it is rusted/leaking. Now to get the tools/parts together to pull the motor & fix it.
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