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Overheating

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Old Apr 25, 2025 | 03:27 PM
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Overheating

Have 06 explorer with the 4.6 that's overheating during highway speeds then cools off at idle. The motor has over 200k miles doesn't leak anything from with I can see it has been raining the last few days so hard to tell. It over heated 2 days ago and thought the thermostat was stuck so removed the thermostat and didn't put one back in rn short on time. Drive it today after 20 minutes I saw the gauge climb up then at a stop sign it went back down. Opened the hood and saw the upper radiator hose was collapsed but didn't see anything leaking out. I haven't done any compression test or anything yet just trying to get an idea of where to look first.
 
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Old Apr 26, 2025 | 06:48 AM
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Is the radiator original?
 
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Old Apr 27, 2025 | 10:45 AM
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Looks like it's been changed only thing that doesn't look newer is water pump. Only overheats when you make the motor work harder like passing someone or steep hill.
 
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