Fan problem - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SurfAnimal · 09-15-2023, 02:46 PM

Ok, so I bought this 2010 2SS a week and a half ago. The cooling fans quit within 2 days. I replaced them, and all was well. Sounded like a helicopter under the hood.
Just now, my ac turned warm, and my fans went silent. They're spinning, but maybe at half speed? And I can no longer hear them. I just fired it up in the yard (still warm) the fans did not come on. I put on the ac, no fans. They did come on after a bit (still quiet) and the temp stayed around 199/200.

I'm concerned because this car had a new motor dealer installed, less than 3000 miles ago. I'm thinking theres an electrical gremlin affecting the fans? Any advice is appreciated, tia. Bobby.

gtstorey · 09-15-2023, 03:24 PM

Sounds like maybe an issue with the ac. Fans will come on at low speed for cooling and may increase as needed for the AC as ECT climbs. They won't reach full speed based upon ect until somewhere around 220+, unless the tune has been changed.

It sounds like the AC isn't coming on to call for higher fan setting. And I think the fan call is based upon AC pressures, not just the AC being turned on.

SurfAnimal · 09-15-2023, 03:29 PM

Quote:

Originally Posted by gtstorey

Sounds like maybe an issue with the ac. Fans will come on at low speed for cooling and may increase as needed for the AC as ECT climbs. They won't reach full speed based upon ect until somewhere around 220+, unless the tune has been changed.

It sounds like the AC isn't coming on to call for higher fan setting. And I think the fan call is based upon AC pressures, not just the AC being turned on.

Thanks for the reply.
So you think an AC diagnosis would find an issue?

gtstorey · 09-15-2023, 03:38 PM

Quote:

Originally Posted by SurfAnimal

Thanks for the reply.
So you think an AC diagnosis would find an issue?

Maybe. But hard to say for sure without being there and seeing it myself. It might be more than one problem.

Is the AC compressor kicking on?

SurfAnimal · 09-15-2023, 03:43 PM

It was running when this happened.Im in Florida, so it's NEVER turned off. I'll have to check that, thanks.

SurfAnimal · 09-15-2023, 04:00 PM

The ac clutch is not spinning. Fuse and relay are good. Anything else to look at before I change the compressor?
Again, thanks.

bsn · 09-15-2023, 04:37 PM

DON"T change the compressor, you are probably low on refrigerant. I bet there is a leak in the system and the seller charged the AC right before the sale. Instead of throwing parts at it take it to a reputable mechanic and let him diagnose it.

SurfAnimal · 09-15-2023, 04:43 PM

Quote:

Originally Posted by bsn

DON"T change the compressor, you are probably low on refrigerant. I bet there is a leak in the system and the seller charged the AC right before the sale. Instead of throwing parts at it take it to a reputable mechanic and let him diagnose it.

In that case, wouldn't the clutch still spin?
Eta. Guess not. Thanks.

bsn · 09-15-2023, 07:48 PM

Is the clutch not spinning or is the compressor not spinning? If the clutch isn't spinning you would have a broken belt. The clutch won't engage the compressor if your refrigerant pressure is low. Have you put gauges on it yet?

chevy pilot · 09-15-2023, 11:17 PM

Low refrigerant,go to AC service.

Nenous1 · 09-16-2023, 07:36 AM

My advice' take that car to a high performance auto shop, spend the money and have the tech perform an allout inspection' it's worth ever dollar...

Don't try and guess.

SurfAnimal · 09-19-2023, 12:09 PM

I got it diagnosed. It's the compressor. He drained the system, and is going to charge the new one for free. I'm changing it myself, tomorrow. Wooooo! Good times!

09-15-2023, 02:46 PM	#1
SurfAnimal Drives: Chevy Suburban Join Date: Aug 2023 Location: FL Posts: 24	Fan problem Ok, so I bought this 2010 2SS a week and a half ago. The cooling fans quit within 2 days. I replaced them, and all was well. Sounded like a helicopter under the hood. Just now, my ac turned warm, and my fans went silent. They're spinning, but maybe at half speed? And I can no longer hear them. I just fired it up in the yard (still warm) the fans did not come on. I put on the ac, no fans. They did come on after a bit (still quiet) and the temp stayed around 199/200. I'm concerned because this car had a new motor dealer installed, less than 3000 miles ago. I'm thinking theres an electrical gremlin affecting the fans? Any advice is appreciated, tia. Bobby. Attached Images

09-15-2023, 03:24 PM	#2
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,155	Sounds like maybe an issue with the ac. Fans will come on at low speed for cooling and may increase as needed for the AC as ECT climbs. They won't reach full speed based upon ect until somewhere around 220+, unless the tune has been changed. It sounds like the AC isn't coming on to call for higher fan setting. And I think the fan call is based upon AC pressures, not just the AC being turned on.

09-15-2023, 03:43 PM	#5
SurfAnimal Drives: Chevy Suburban Join Date: Aug 2023 Location: FL Posts: 24	It was running when this happened.Im in Florida, so it's NEVER turned off. I'll have to check that, thanks.

09-15-2023, 04:00 PM	#6
SurfAnimal Drives: Chevy Suburban Join Date: Aug 2023 Location: FL Posts: 24	The ac clutch is not spinning. Fuse and relay are good. Anything else to look at before I change the compressor? Again, thanks.

09-15-2023, 04:37 PM	#7
bsn Drives: 2013 ZL1 Join Date: Sep 2021 Location: Virginia Posts: 301	DON"T change the compressor, you are probably low on refrigerant. I bet there is a leak in the system and the seller charged the AC right before the sale. Instead of throwing parts at it take it to a reputable mechanic and let him diagnose it.

09-15-2023, 07:48 PM	#9
bsn Drives: 2013 ZL1 Join Date: Sep 2021 Location: Virginia Posts: 301	Is the clutch not spinning or is the compressor not spinning? If the clutch isn't spinning you would have a broken belt. The clutch won't engage the compressor if your refrigerant pressure is low. Have you put gauges on it yet?

09-15-2023, 11:17 PM	#10
chevy pilot Drives: 2010 2SS/RS A6 Join Date: May 2019 Location: Hki.Finland Posts: 952	Low refrigerant,go to AC service.

09-16-2023, 07:36 AM	#11
Nenous1 Drives: 2011 Camaro rs Join Date: Jun 2023 Location: NC Posts: 65	My advice' take that car to a high performance auto shop, spend the money and have the tech perform an allout inspection' it's worth ever dollar... Don't try and guess.

09-19-2023, 12:09 PM	#12
SurfAnimal Drives: Chevy Suburban Join Date: Aug 2023 Location: FL Posts: 24	I got it diagnosed. It's the compressor. He drained the system, and is going to charge the new one for free. I'm changing it myself, tomorrow. Wooooo! Good times!