Engine Temp Question
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Pro
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From: The South
Engine Temp Question
Yesterday while out cruising in our 02 Vert- my temp started rising while in a traffic jam. It normally runs about 185-195 when cruising- but while stuck in traffic is jumped up to 230 plus.
Is this normal, dangerous?
Is this normal, dangerous?
Scientific Negotiator
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St. Jude Donor '07-'08-'10, '14
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From: Lake Mary Florida
Get a flashlight and crawl under the nose area and look up in there for debris. Being very careful, use a vacuum to remove all the material that gets sucked up there and in-between the fins. Be careful the fins are delicate.
In mid summer in non-moving operations it should rise up some from normal 194 or so, but 230 seems awfully high from where it has been running. Normally I see about 205 in worst cases but then the fans kick on just before and it knocks it back down to 199. Are you running the AC when this happens?
In mid summer in non-moving operations it should rise up some from normal 194 or so, but 230 seems awfully high from where it has been running. Normally I see about 205 in worst cases but then the fans kick on just before and it knocks it back down to 199. Are you running the AC when this happens?
Last edited by Jet-Jock; Aug 10, 2008 at 11:21 PM.
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Get a flashlight and crawl under the nose area and look up in there for debris. Being very careful, use a vacuum to remove all the material that gets sucked up there and in-between the fins. Be careful the fins are delicate.
In mid summer in non-moving operations it should rise up some from normal 194 or so, but 230 seems awfully high from where it has been running. Normally I see about 205 in worst cases but then the fans kick on just before and it knocks it back down to 199. Are you running the AC when this happens?
In mid summer in non-moving operations it should rise up some from normal 194 or so, but 230 seems awfully high from where it has been running. Normally I see about 205 in worst cases but then the fans kick on just before and it knocks it back down to 199. Are you running the AC when this happens?
Here is the description of how the cooling fans work:
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).
Bill
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2023 C5 of the Year Finalist - Unmodified
I'd see temperatures up there quite often when I lived in Vegas. It comes straight back down when the air gets flowing again or the fans cut in.
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From: Lake Mary Florida
I'd didn't say that wasn't a normal temp, what I said was jumping from the normals the OP had been seeing to suddenly see 230 was a bit high and there is probably some reason which can most likely be attributed to debris blocking air flow.
With the AC on it will not NORMALLY get to that temp, with the AC off, then yes it will get there before it turns on the cooling fans. I never see the upper limits since I live in FL and run AC all the time.
It is not much different the the temp ranges of the LT1. And the LS1 operates at nearly the same range values.
With the AC on it will not NORMALLY get to that temp, with the AC off, then yes it will get there before it turns on the cooling fans. I never see the upper limits since I live in FL and run AC all the time.
It is not much different the the temp ranges of the LT1. And the LS1 operates at nearly the same range values.
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From: Lake Mary Florida
Then your system is operating correctly. Had you had the AC on it would have probably never gotten over 205°F. Same thing if you noted the temp and turned the AC it would have come back down. If you had the top down you can still run the AC just press the Mode button and take the system out of Auto mode. Generally upper/lower registers are a good mode for top down driving with the temp set a little higher. The fan relays are designed to be turned on at those higher temps minus the AC effect.
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Pro
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From: The South
Then your system is operating correctly. Had you had the AC on it would have probably never gotten over 205°F. Same thing if you noted the temp and turned the AC it would have come back down. If you had the top down you can still run the AC just press the Mode button and take the system out of Auto mode. Generally upper/lower registers are a good mode for top down driving with the temp set a little higher. The fan relays are designed to be turned on at those higher temps minus the AC effect.
