Engine temperature
Thread Starter
Le Mans Master
Joined: Nov 2015
Posts: 7,382
Likes: 3,500
From: Lake Havasu City Arizona
Engine temperature
I notice that when the ambient temperature outside is about 55 degrees that the engine temp runs around 165 or so when I'm cruising on the highway, and sometimes the rev limiter on the DIC will turn yellow as if the engine still needs to be warmed up. If the engine is idling, or I'm driving around town in stop and go traffic it goes up to the normal 200 range when the weather is running 55 degrees or so. I'm thinking that maybe the thermostat should be replaced?
Banned Scam/Spammer
Joined: Nov 2008
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From: Central Fl. Leesburg
Since I trust the computer to let me know if there is a problem I don't watch the gauges however it makes sense that while cruising on the highway the temp would be lower than in stop n go traffic.
Burning Brakes
Joined: Nov 2022
Posts: 910
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From: MN
I notice that when the ambient temperature outside is about 55 degrees that the engine temp runs around 165 or so when I'm cruising on the highway, and sometimes the rev limiter on the DIC will turn yellow as if the engine still needs to be warmed up. If the engine is idling, or I'm driving around town in stop and go traffic it goes up to the normal 200 range when the weather is running 55 degrees or so. I'm thinking that maybe the thermostat should be replaced?
Administrator
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From: In a parallel universe. Currently own 2014 Stingray Coupe.
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Yes, i would say replace the thermostat - even at highway speeds the engine temp should be more than 165*.
Race Director
Joined: Oct 2004
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From: Home of the VOLS ! Knoxville, TN. Tennessee
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Very easy to do. It took all but 15 minutes including clean up. They could not have placed it in an easier place.
I think the thermostat was $80 and the fluid was $20
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Racer
Joined: Oct 2010
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From: Houston Texas
I notice that when the ambient temperature outside is about 55 degrees that the engine temp runs around 165 or so when I'm cruising on the highway, and sometimes the rev limiter on the DIC will turn yellow as if the engine still needs to be warmed up. If the engine is idling, or I'm driving around town in stop and go traffic it goes up to the normal 200 range when the weather is running 55 degrees or so. I'm thinking that maybe the thermostat should be replaced?
Drifting
Joined: Feb 2005
Posts: 1,440
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From: San Jose Ca
If you didn't have a thermostat I'd agree with your logic, but a thermostats job is to keep the engine at a constant designed temperature, regardless of load/speed/outside temp, etc. If your cars temp fluctuates with all those things your tstat is stuck open and needs replacement.
Always Shiftin'
Joined: Jun 2000
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From: Central Florida
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We have had cold temps recently in Orlando in the 50s and 60s. After the thermostat change, my Vette runs between 190 and 200 degrees (highway and around town) in these lower outdoor temps.
Race Director
Joined: Feb 2001
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From: Grapevine Tx
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The redline changes when the temp goes from 161 degrees to 163 degrees, at least on my GS. I think I'm due for a new thermostat too.
Drifting
Joined: Feb 2005
Posts: 1,440
Likes: 173
From: San Jose Ca
If your redline fluctuates because of temperature I'd agree. Lower water and oil temps can contribute to increased wear as parts don't get happy until a certain temp is reached. Also, with a lower oil temp some contaminants from the combustion process won't get burned off.
Last edited by Red86Cfour; Feb 29, 2024 at 03:03 PM.
Safety Car
Joined: Nov 2005
Posts: 4,361
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From: Huntsville Alabama
174 is the temo all my C7s have removed the redline/ warmup. and acted normal.
My currennt Z06 in winter does stay in the 165-170 range. unless ran hard. but once out side temps are int he 70s its seeing normal temps. So you guys think the therm is stuck or just reacting?
My currennt Z06 in winter does stay in the 165-170 range. unless ran hard. but once out side temps are int he 70s its seeing normal temps. So you guys think the therm is stuck or just reacting?
Thread Starter
Le Mans Master
Joined: Nov 2015
Posts: 7,382
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From: Lake Havasu City Arizona
174 is the temo all my C7s have removed the redline/ warmup. and acted normal.
My currennt Z06 in winter does stay in the 165-170 range. unless ran hard. but once out side temps are int he 70s its seeing normal temps. So you guys think the therm is stuck or just reacting?
My currennt Z06 in winter does stay in the 165-170 range. unless ran hard. but once out side temps are int he 70s its seeing normal temps. So you guys think the therm is stuck or just reacting?
Safety Car
Joined: Nov 2005
Posts: 4,361
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From: Huntsville Alabama
Good deal. I was assuming this car was just running cooler with all the cooling mods, and had a cooler Therm. As with my First C7 cam swap I installed one of those as well. and the car acted like that too. I swapped back as i hated the Tach begin wrong