Cooling fan not turning off issue
04-28-2021 | 06:32 PM
#56
Administrator
Joined: 10-13-2011
Posts: 37,831
From: Welland,Ont Canada
04-28-2021 | 07:50 PM
#57
Moderator
Joined: 05-01-2014
Posts: 8,174
From: California
04-29-2021 | 07:56 PM
#59
Senior Member
Joined: 04-27-2021
Posts: 434
From: Alabama
Hi everybody,
I'm here to pick the brain of the brightest HHR gurus.
Subject: 2007 HHR 2.4 manual with 165K on the clock
Let me give you the back story as any detail can be useful.
About a month and a half ago I cleaned the throttle body. It was so dirty that I had to scrape off the buildup with my fingernails because the throttle body cleaner would not get it off. Of course I got the high idle problem afterwards. I drove the car like that for about 2 weeks hoping that the computer would figure it out but it did not. I ended up taking it to the dealer where the tech flashed the 2 programs available for the 2 different injectors and that finally fixed the high idle. Before this the cooling fan would turn on at 208F and cool the engine nicely. After the reflash I noticed that the engine would heat up past 215F so I figured that the thermostat failed. Replaced it with a fancy fail safe one that blows open when the engine overheats. After the first drive it blew open and now the engine temp settles around 165F when moving. On my way back from work I was sitting in traffic and noticed that the cooling fan would turn on at 217F but would not shut off even at 130F. I dug around this forum and found out that the 217F is normal for the fan to kick in but then it raises the question why the thermostat blew open. I swapped the relay to rule it out sticking but it made no difference. I tested it 3 times with same results. I will swap the thermostat back to the old one.
Any help is much appreciated!
Krisz
Solution: The thermostat was defective. If the coolant reaches 217F and the fan turns on it won't turn off until the car starts to move.
One more thing. When the engine heats up over 210F it starts to sound like a diesel tractor and has reduced power. Maybe the temp sensor is failing and reads too low? But that still doesn't explain why the cooling fan refuses to turn off...
I'm here to pick the brain of the brightest HHR gurus.
Subject: 2007 HHR 2.4 manual with 165K on the clock
Let me give you the back story as any detail can be useful.
About a month and a half ago I cleaned the throttle body. It was so dirty that I had to scrape off the buildup with my fingernails because the throttle body cleaner would not get it off. Of course I got the high idle problem afterwards. I drove the car like that for about 2 weeks hoping that the computer would figure it out but it did not. I ended up taking it to the dealer where the tech flashed the 2 programs available for the 2 different injectors and that finally fixed the high idle. Before this the cooling fan would turn on at 208F and cool the engine nicely. After the reflash I noticed that the engine would heat up past 215F so I figured that the thermostat failed. Replaced it with a fancy fail safe one that blows open when the engine overheats. After the first drive it blew open and now the engine temp settles around 165F when moving. On my way back from work I was sitting in traffic and noticed that the cooling fan would turn on at 217F but would not shut off even at 130F. I dug around this forum and found out that the 217F is normal for the fan to kick in but then it raises the question why the thermostat blew open. I swapped the relay to rule it out sticking but it made no difference. I tested it 3 times with same results. I will swap the thermostat back to the old one.
Any help is much appreciated!
Krisz
Solution: The thermostat was defective. If the coolant reaches 217F and the fan turns on it won't turn off until the car starts to move.
One more thing. When the engine heats up over 210F it starts to sound like a diesel tractor and has reduced power. Maybe the temp sensor is failing and reads too low? But that still doesn't explain why the cooling fan refuses to turn off...
i just had same fan issue start on my car too. It maybe cause i put straight water in it to check for leaks. Running fine...just when turn a/c on fan comes on and stays on as your does until shut engine off....hooefully when i drain and fill with Dexcool my problem will go away
04-30-2021 | 09:19 AM
#60
Thread Starter
Member
Joined: 06-26-2017
Posts: 83
From: Los Angeles
i just had same fan issue start on my car too. It maybe cause i put straight water in it to check for leaks. Running fine...just when turn a/c on fan comes on and stays on as your does until shut engine off....hooefully when i drain and fill with Dexcool my problem will go away