02-07-2022, 07:05 AM | #1 |
Drives: 2017 Camaro Join Date: Feb 2020
Location: TEXAS!!
Posts: 349
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What could it be...
Hello all.
OK. 2017. I have been having to undo the negative terminal on the battery to fix this. My AC will not work at times, usually when i turn the car off i can hear the fan running non stop. that means the ac wont work when that happens. AFter i do the negative terminal all is fine. but it has been happening more frequently. what can it be? thx
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02-07-2022, 08:32 AM | #2 |
Drives: 15 SilveradoLTZ,162SSVert BlazerRS Join Date: Dec 2015
Location: Minot,Maine
Posts: 644
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Coolant temp Sensor? Low coolant?
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02-07-2022, 09:00 AM | #3 | |
Drives: 2020 Camaro 2SS A10 Join Date: Jun 2018
Location: Michigan
Posts: 1,380
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Quote:
I've heard about this problem related to electrical on my 2007 Impala SS, but the cause in my case is unusual Does your car have a sunroof? IF not forget what I said. In my case the drain railings by the sunroof were blocked and caused water leaking into the car which shorted out the Vent switch of sorts. Very odd issue.
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02-07-2022, 09:30 AM | #4 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
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02-07-2022, 12:24 PM | #5 |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
Location: Connecticut
Posts: 2,343
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Water temp not getting up to at least 180 degrees and or taking way to long to heat up to that temp.
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02-07-2022, 12:48 PM | #6 |
Drives: 2017 Camaro Join Date: Feb 2020
Location: TEXAS!!
Posts: 349
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So it might be the themostat?
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02-07-2022, 01:39 PM | #7 |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,177
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02-07-2022, 01:57 PM | #8 |
17’ Hyper Blue 2SS
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I’ve had this issue in the last few months, specifically when the car starts in 30-50 degree weather in the morning. Temp gauge would be bottomed out not moving, a quick run with the code reader and a quick clear would set the car back to normal, temo was fine and all, no issue, replaced the temp sensor, still happened, replaced the T-stat, still happened. I came to the conclusion that the thermostat just doesnt open fast enough in the cold weather so the sensor panics and throws the fans on full blast. Note I live in AZ so I never really run my heater, but ever since I’ve kept my car at about 85 degrees to get the heater rolling, have not had the issue since.
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02-07-2022, 01:57 PM | #9 |
Monterey County Camaros
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Mine did the same thing. The fan wouldn't turn off even though the car was off. Did it probably once a month. After the second time I took it in and have the thermostat replaced. Cost about $450. No longer does it.
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02-07-2022, 03:06 PM | #10 |
Drives: 2017 Camaro Join Date: Feb 2020
Location: TEXAS!!
Posts: 349
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I forgot to mention. When it does this, the temp gauge does not move even after driving for a while?
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02-07-2022, 03:08 PM | #11 |
Drives: 2017 Camaro Join Date: Feb 2020
Location: TEXAS!!
Posts: 349
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Just an FYI. When mine does this the AC dont work....heater does. Take the negarive terminal off and everything back to normal.
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02-07-2022, 04:41 PM | #12 |
Drives: 2021 LT1 10 speed auto Join Date: May 2013
Location: Connecticut
Posts: 2,343
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Yes, did you ever swap out the original for a aftermarket cooler thermostat or did someone else? Some of those stats Orings or rubber seals are known to split and slow down warm up. Or the original GM stat is partially open and again slowing down the getting up to temp process or not getting hot enough period, especially during the cold weather.
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02-07-2022, 07:18 PM | #13 |
Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017
Location: East Tennessee
Posts: 11,598
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My guess is also the coolant temp sensor or the thermostat (less likely, because a battery disconnect wouldn't fix a stuck thermostat). Just had to get both replaced on wifey's truck
OP, if you have an OBD-II reader, you can read off the codes and hopefully get a clear idea what exactly it is before firing the parts cannon at it.
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02-08-2022, 06:41 AM | #14 | |
Drives: 2017 2SS, 50th pkg, M6, MRC, NPP Join Date: Jan 2016
Location: Ocean City, NJ
Posts: 3,177
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Quote:
Temp sensor is cheaper and easier to get to than thermostat. Load up the oil temp reading on the DIC. That should follow the coolant temp although slower to warm up. If that warms normally I would suspect the sensor over the thermostat. The other thing to do is feel the radiator return hose to see how warm it is. That's old school and I'm not even sure how easy it is to get to on our car. |
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