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Overheating while accelerating not in idle

Tiny
DANYEL
  • MEMBER
  • 2004 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 116,234 MILES
My SUV started overheating while in drive. It will go all the way up to just before the red line then stops pretty much. It only does this while accelerating. The heat/air will blow hot sometimes and cold some. However, while in park while running the temperature goes back down. I am thinking hose or leak but have not had the chance tonight to look, it just started.
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Saturday, October 20th, 2018 AT 11:11 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Hello,

It sounds like you have a partially blocked radiator or the fan clutch is not working right. Here are guides to help us get started:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

and

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

and

https://youtu.be/N_-MLVlBHk8

Please run down these guides and report back.

Cheers, Ken
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Monday, October 22nd, 2018 AT 12:32 PM

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