Operating Temperature

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Jul 20, 2025 | 08:10 PM

#21

sramzzz

Melting Slicks

Joined: May 2020

Posts: 2,135

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From: North Little Rock, AR

Turn the AC on and the fan should come on regardless of temp.

Jul 20, 2025 | 08:27 PM

#22

sramzzz

Melting Slicks

Joined: May 2020

Posts: 2,135

Likes: 1,309

From: North Little Rock, AR

Turn the AC on and the fan should come on regardless of temp.

Jul 20, 2025 | 09:03 PM

#23

javaman

Thread Starter

Melting Slicks

Joined: May 2009

Posts: 2,217

Likes: 638

From: Port St Lucie Florida

2025 C6 of the Year Finalist - Modified

2023 C6 of the Year Finalist - Modified

2022 C6 of the Year Finalist - Modified

2021 C6 of the Year Finalist - Modified

Quote:

Originally Posted by sramzzz

Turn the AC on and the fan should come on regardless of temp.

Will check tomorrow.
Thanks.

Jul 20, 2025 | 09:54 PM

#24

FatsWaller

Safety Car

Joined: Aug 2017

Posts: 4,927

Likes: 2,334

From: Etobicoke (Toronto) Ontario

The attached GM doc explains what conditions must be met for the fan to run, and at what duty cycle.

Attached Images

Cooling Doc.pdf (414.6 KB, 108 views)

Jul 20, 2025 | 10:13 PM

#25

cthusker

Le Mans Master

Joined: Dec 2005

Posts: 7,753

Likes: 210

From: North Western Connecticut

Quote:

Originally Posted by javaman

Will check tomorrow.
Thanks.

With some vehicles the fan doesn’t always turn on immediately with AC on in all conditions. But with AC cooling at maximum power fans should come on pretty fast before condenser gets too hot. As example my Charger R/T when first started and AC is on the fan doesn’t start immediately. It doesn’t turn on until the temperature reaches a specified point which can take a few minutes.

Jul 20, 2025 | 11:38 PM

#26

VettesRcool

Instructor

Joined: Apr 2025

Posts: 243

Likes: 116

200ish degrees in mixed driving conditions with 105 ambient air temperature and very dry air here.

Aug 3, 2025 | 08:41 AM

#27

javaman

Thread Starter

Melting Slicks

Joined: May 2009

Posts: 2,217

Likes: 638

From: Port St Lucie Florida

2025 C6 of the Year Finalist - Modified

2023 C6 of the Year Finalist - Modified

2022 C6 of the Year Finalist - Modified

2021 C6 of the Year Finalist - Modified

Spent the last few weeks testing under various conditions.
Everything seems fine now.
Even with the recent oppressive So Florida heat, temperature holding at around 212*.
Will continue to keep a close eye on it.
Thanks again to all.

Aug 10, 2025 | 03:50 AM

#28

sirdano

Melting Slicks

Joined: Jul 2015

Posts: 2,296

Likes: 232

From: Round Rock Texas

I had this issue on my C5.
A plastic shopping bag open up on radiator and blocked 1/2 of the flow.
This almost had get one of the lower screeens but still havent got one