overheating and I hear a knocking noise

2006 PONTIAC GTO
127 MILES • 6.0L • V8 • MANUAL
Avatar
DAVOBICKHAM
  • MEMBER
  • 1 POST
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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
STRAILER
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 54,178 POSTS
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

Image (Click to enlarge)
Attached Media
May 19, 2017 at 11:52 AM
Advertisement