operating temp question
Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 7,727
Likes: 7
From: Twilight zone
St. Jude Donor '05-'06
operating temp question
what is the maximum temperature a stock c-5 should run before you should be concerned? Is 225 within "normal" operating temp? ( asking because i got a low coolant flash on dic one day, and started watching the temp closely when it got up to 228 at one point!just not sure if that is considered warm for these or not...btw checked coolant and was full and rechecked after it cooled... still fine...)
thanks guys,
its just one of those things i'm not sure of...
thanks guys,
its just one of those things i'm not sure of...
Melting Slicks
Joined: Jul 2004
Posts: 2,846
Likes: 5
From: Sandy Ego CA
My 04 run's at 220 most of the time, I to was concered about these temps but it seems to be normal from all of the responses that I had received, but it still bothers me> I have already changed the stat out to a 160 and I'm waiting to put my headers on and will adjust the fan setting when I get it tuned.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Fans kick on in high speed about 228-230 or so. Those temps are normal in hot, low air flow conditions such as stop and go traffic where the fan set points control the upper temp. On the freeway, mine saw closer to 200-210 normally. 
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Thread Starter
Le Mans Master
Joined: Jul 2004
Posts: 7,727
Likes: 7
From: Twilight zone
St. Jude Donor '05-'06
low coolant!
ok, thanks to all that replied.....but today, i drove for about 15 minutes and the low coolant came up on dic again, but i alrea 
dy checked this last time and it was full? what the heck?
dy checked this last time and it was full? what the heck?
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Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
I don't usually pay much attention to coolant temps but I did notice today that mine popped up to about 215-220 (its about 75 degrees outside today). I normally pay attention to my oil temps. I keep them displayed in the DIC at all times. In traffic I am usually up around 220 in heavy traffic. As soon as traffic opens up it drops back down to 200-207 on a 70-80 deg day. I think your temps are normal and nothing to be overly concerned about.
You may want to consider a cooler thermo for spring and summer months. If you do, make sure you get some tuning to turn on your fans or switching to a cooler thermo is all for nothing.
I am switching to a 170 thermostat in the next month or so to keep my mind at ease......
You may want to consider a cooler thermo for spring and summer months. If you do, make sure you get some tuning to turn on your fans or switching to a cooler thermo is all for nothing.
I am switching to a 170 thermostat in the next month or so to keep my mind at ease......
Drifting
Joined: Jan 2005
Posts: 1,419
Likes: 16
From: Oceanside, CA
Originally Posted by flynbya2
ok, thanks to all that replied.....but today, i drove for about 15 minutes and the low coolant came up on dic again, but i alrea dy checked this last time and it was full? what the heck?
dy checked this last time and it was full? what the heck?Have you checked to see if you have any codes? Set vehicle to run with out starting the car push and hold the options button and push the fuel button 4 times and codes will display.
Not sure if any codes apply to coolant temps. Just a thought.
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
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From: King George VA
Originally Posted by flynbya2
ok, thanks to all that replied.....but today, i drove for about 15 minutes and the low coolant came up on dic again, but i alrea dy checked this last time and it was full? what the heck?
dy checked this last time and it was full? what the heck?
Burning Brakes
Joined: Oct 2004
Posts: 792
Likes: 19
From: ME
Concerning the low coolant light with the resevoir full like you said. I believe GM had a tech net note concerning that. The light will go on if you're sitting or parked heading down a hill with a good angle to it. The sensor is in the back of the tank so all the coolant simply goes to the front of the tank in that situation. There apparently is a way to align the tank to prevent that from happening.
