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Heater core gurgling

OK folks, my heater core gurgles. It does it when the heater control is turned to the HEAT side, and I turn on the car. It will do it a little when I rev the truck but when it warms up, goes away.

When the control is turned to COOL, no gurgling. Hopefully just a low coolant issue and needs to be burped?

Truck is a 1995 F150

Go...

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Old 10-20-2011, 02:14 PM
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That noise was a bad head gasket on my Toyota; tried burping it many times, no soap, eventually just got worse.

BUT! Take comfort in the fact that mine is the only lemon that ever came out of the factory in 1992, so I'm sure you just have an air bubble.
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Old 10-20-2011, 03:28 PM
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I had the exact same part in my '97 Ford Aerostar minivan, and it gurgled for a while, then one day, there was green water dribbling from the dash onto the passenger floor board.

My advice: Pull it and replace it before you have to replace a floor mat. It wasn't that big of a job on the Aerostar, though the "push" connectors on the other side of the firewall are a pain in the ass!

Good luck, and get 'er DONE!

N!
Old 10-20-2011, 04:36 PM
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Mine was dexcool. It gels up and gives you that waterfall sound. Flushing helped.
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Old 10-20-2011, 08:24 PM
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When air enters the cooling system through a small leak, sometimes it will eventually find the highest places to collect.

Problem could be caused by something simple as a bad pressure cap, or as heinous as a blown head gasket.

Can you smell coolant after you've driven a few minutes?
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Old 10-21-2011, 02:50 AM
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That is one problem my 911 will never have!

I agree, it sounds like trapped air.
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Old 10-21-2011, 04:33 AM
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Quote:
Originally Posted by yetibone View Post
When air enters the cooling system through a small leak, sometimes it will eventually find the highest places to collect.

Problem could be caused by something simple as a bad pressure cap, or as heinous as a blown head gasket.

Can you smell coolant after you've driven a few minutes?
Answer...yes I do smell coolant after driving for a bit. I did replace the heater core myself a while back. Mebbe I didn't do it all correctly.
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Old 10-21-2011, 04:55 AM
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$70 for a pressure bleeder is a great investment.

Old 10-21-2011, 05:03 AM
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