overheating and I hear a knocking noise

2006 PONTIAC GTO
127 MILES • 6.0L • V8 • MANUAL
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DAVOBICKHAM
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I had to change my upper radiator hose yesterday because there was a hole on it. Coolant was running out the hole so I replaced it. Now my car keeps overheating and I hear a hard knocking noise. It seems like the noise is coming from the hose. I can send a video of the sound. I do not know what the problem is or where to start.
May 16, 2017 at 4:28 PM
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STRAILER
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Hello,

It sounds like you have a thermostat that is stuck closed which will cause the thumping noise you are describing. Please follow this guide to get the thermostat changed out.

https://www.2carpros.com/articles/replace-thermostat

Here are some diagrams for your car.(BELOW)

Please let us know what happens.

Cheers, Ken

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May 19, 2017 at 11:52 AM