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Engine running hot?

Tiny
JONATHAN.925
  • MEMBER
  • 2003 TOYOTA 4RUNNER
  • 4.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 223,000 MILES
My cars engine gets really hot in a short period of time, but it does not overheat. I've changed the oil, spark plugs, thermostat, manifold exhaust gaskets and did a radiator flush. Still no luck. Can a 02 sensor cause this much damage?
Friday, July 7th, 2023 AT 10:18 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,942 POSTS
The oxygen sensor cannot cause this kind of problem, do you hear the clutch fan kick in when the engine is hot? If not, I would replace the fan clutch.

Here are two guides to help you with instructions below to help you with your truck:

https://www.2carpros.com/articles/fan-clutch-removal

and

https://www.2carpros.com/articles/fan-clutch-symptoms

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Friday, July 7th, 2023 AT 2:12 PM

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