Bubbling noise after water pump and belt were replaced

2006 JEEP LIBERTY
135,897 MILES • 3.7L • 6 CYL • 4WD
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MUNCHIE
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  • 1 POST
Just had water pump and belt replaced, now I hear a bubbling noise from dash area from start up until I turn off the engine. Does not run hot.
Apr 9, 2022 at 4:04 PM
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KASEKENNY
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More than likely you have an air pocket in the heater core. Here is a guide that talks about this:

https://www.2carpros.com/articles/vehicle-bubbling-noise

Basically, we may need to drain and fill the cooling system again if you are not able to get it purged but I would suggest starting with using a fill funnel as shown below and that should help work the bubbles out.

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Please see the picture below and then we can take the next step. Let me know if you have questions on this.

Thanks
Apr 10, 2022 at 7:24 PM