C5 LS1 overheating?1
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Instructor
Joined: Jul 2010
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From: River City USA, East of the Mississippi Peoples Republic of Illinois
C5 LS1 overheating?1
I'm on a road trip with my C5. Encountered 95 degree F temps and engine temps rising to 226F. Temp held then dropped. Headed for South Texas and air temps of 112F. Should I be concerned about engine temps that high or is this not out of the norn? A bit concerned, or is my concern for naught?
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Melting Slicks
Joined: Mar 2004
Posts: 2,410
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From: Horseshoe Bend ID
You should see about 198 going down the road, somewhere higher in traffic and up to 220-228 in the Wendy's drive thru. If you see more than this, remove the crud and debris from the radiator.
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
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From: River City USA, East of the Mississippi Peoples Republic of Illinois
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
Likes: 0
From: River City USA, East of the Mississippi Peoples Republic of Illinois
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Race Director
Joined: Mar 2008
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From: Rio Rancho NM
Actually 226 is not "OVERHEATING" I'm surprised noone has said this but that is the way the car is supposed to be from the factory....
"The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
This is right from the tech manual.
"The low speed cooling fan is commanded on when the coolant temperature reaches 108°C (226°F). It is turned off if the coolant temperature lowers to 104°C (219°F). The high speed cooling fan is commanded on when the coolant temperature reaches 113°C (235°F). It is turned off if the coolant temperature lowers to 108°C (226°F). When the A/C is on and the coolant temperature reaches 85°C (185°F), the low speed cooling fan will be turned on at vehicle speeds less than 56 kPh (35 mph).
This is right from the tech manual.
Last edited by Chicago1; Jul 11, 2011 at 05:29 PM.
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
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From: River City USA, East of the Mississippi Peoples Republic of Illinois
over heating
Thanks a bunch guys. Had the fans checked at Chevrolet in Republic, MO. All checked out fine. I'm happy and headin for San Anton in the morn with confidence. Thanks a bunch again guys. 
Melting Slicks
Joined: Aug 2005
Posts: 2,960
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From: New Braunfels TX
If you want the fan temps changed and a T stat installed we (Lethal Performance) are in San Antonio and can help you out if you want the car to run cooler. I should have stated earlier that your temp is normal to OEM standards.
Thread Starter
Instructor
Joined: Jul 2010
Posts: 152
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From: River City USA, East of the Mississippi Peoples Republic of Illinois
These forum members are super!
Melting Slicks
Joined: Aug 2005
Posts: 2,960
Likes: 112
From: New Braunfels TX
www.lethalperformancesatx.com
Ill be there the next 3 days finishing up my car.
