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Engine fan pitch?

Tiny
RAGINGSOUL
  • MEMBER
  • 2004 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 212,623 MILES
When it's really hot outside like right now it's 104 degrees and I just sit at an idle the thermostat goes up to the mark between 210 and 260, and then it usually comes down a little bit. My question is, would that be the thermostat itself or is it possibly the radiator itself needs to be cleaned with the amount of miles and it's gone on it? Could it be something else?

The A/C is still blowing cold even at the temperature in the picture below.

I was wondering if there is a fan that has a better pitch on it that would pull more air through the radiator?
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Thursday, July 28th, 2022 AT 3:18 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

Well, due to the extreme heat, it will make the cooling system work much harder to achieve the operating temperature.
The first thing you should do is to make sure the coolant is in good condition. If it has not been flushed in a while, it will be a good idea to do so.

Here is a helpful guide on coolant system drain and flush:

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

As for the fan, it is designed specifically for the volume of air your vehicle requires, changing the pitch does not necessarily mean more air and can do more harm than good.

Let me know of any questions.
Thank you.
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Thursday, July 28th, 2022 AT 8:41 PM

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