Chevy Lumina Coolant leak

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Chevy Lumina Coolant leak

Unread post by Guest » Sun Aug 16, 2020 8:33 am

My 98 Chevy Lumina 3.1 L is leaking coolant tour the firewall area. What is a possible cause other than the intake gasket

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Re: Chevy Lumina Coolant leak

Unread post by carriedi » Tue Aug 18, 2020 4:53 am

intake leaking coolant usually drips down on the front or rear of the motor. The intake sits lower than the valve covers so the leak would normally go down the trans or timing cover.

Are you sure it's coolant? The condensation from the AC will drip down on the passenger side of the firewall. The leak would look like a water leak sometimes confused as a coolant leak but it isn't. Verify it's coolant and not just condensation (just water)

Coolant leaks by the firewall could be heater hoses, freeze plugs, you have to try and locate where the leak is starting from. Is it off the back of the engine or down the firewall? When does it leak? When the engine is running? Does it leak when it's just sitting with the engine turned off? Or does it leak when the engine is running?

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