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.

Coolant Leak Guidance

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Old 01-07-2008, 09:53 PM
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Riceinator
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Default Coolant Leak Guidance

Hi guys.
Iam just gettting time again to start workin on the stang while its in storage. I have a coolant leak on it and I just wondering if you guys could have any idea where its coming from.

Ok. heres the situation. My heater core went bad so I bypassed it at the firewall. After running the car and allowing it to get up to operating temp., coolant starts to leak. It puddles on the ground right underneath where the bypass is. I know its leaking from the bypass but when I look at it, it doesnt seem to be leaking as much as I see dripping on the ground.(It could just be me though). Anyways, my question is is there any areas around the firewall on the passenger side that could be leaking coolant other than where I bypassed it?

Thanks in advance.
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Old 01-07-2008, 09:58 PM
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fourfivefour
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Default RE: Coolant Leak Guidance

Maybe it's stillleaking out of the heater core or heater box or worse the intake.
But it's probablyjust your bypass leaking running down the hose where you don't see it.
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Old 01-07-2008, 10:02 PM
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Riceinator
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Default RE: Coolant Leak Guidance

Okay, thanks for the quick answer.
If it was leaking out of the intake, where abouts on the intake should I be looking for leaks?
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Old 01-07-2008, 10:10 PM
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fourfivefour
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Default RE: Coolant Leak Guidance

It could leak out of the bolts or the intake gasketnear where the coolant passage is.
Could even be leaking from the head gasket orexpansion plug.
Use a pressure tester and pump up your cooling system and look around.
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Old 01-07-2008, 10:15 PM
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Default RE: Coolant Leak Guidance

ok, thanks alot.
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