Temp / Fan - normal?
Thread Starter
Melting Slicks
Joined: Oct 2016
Posts: 3,340
Likes: 2,084
From: Lehigh Valley PA
Temp / Fan - normal?
Hey Guys,
I noticed last night that my analog temp needle kept going WAY high (like 250+ degrees) but my digital temp gauge was around 220. A message came up that said "Turning off A/C to lower temp".
Has anyone see this happen? It did it like 4 or 5 times last night - it would go high then stay at 220 - it was around 70 degrees out, and I was "around-town" driving.
Also, I noticed the fan is coming on alot and stays on after I turn off the car - is this normal?
Sorry for the newbie questions - but I just picked her up last night.
Thanks!
I noticed last night that my analog temp needle kept going WAY high (like 250+ degrees) but my digital temp gauge was around 220. A message came up that said "Turning off A/C to lower temp".
Has anyone see this happen? It did it like 4 or 5 times last night - it would go high then stay at 220 - it was around 70 degrees out, and I was "around-town" driving.
Also, I noticed the fan is coming on alot and stays on after I turn off the car - is this normal?
Sorry for the newbie questions - but I just picked her up last night.
Thanks!
Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
What year car? 2014s have a sporadic heat issue.
https://www.corvetteforum.com/forums...-to-260-a.html
AND
https://www.corvetteforum.com/forums...any-ideas.html
Elmer
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Elmer
Team Owner
Joined: Nov 2007
Posts: 45,267
Likes: 8,542
From: Rochester, NY
It is not normal to run that hot when outside temp is only 70 degrees. As for the fan running after the car has been shutdown that is normal but obviously it should shutdown after a few minutes.
As for the different readings on the two gauges can not help on that one. Although I would say that big a difference would concern me.
As for the different readings on the two gauges can not help on that one. Although I would say that big a difference would concern me.
Melting Slicks
Joined: Dec 2017
Posts: 2,012
Likes: 955
From: Central Commiefornia
Do you have an OBD II (On Board Diagnostics, V2) code reader?
Very simple to use and WELL worth getting one and taking the time to learn how to use it to check if the computer has noticed and listed any problems.
OBD II code list
Very simple to use and WELL worth getting one and taking the time to learn how to use it to check if the computer has noticed and listed any problems.
OBD II code list
Last edited by jimmbbo; Jun 13, 2018 at 04:07 PM.
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Do you have an OBD II (On Board Diagnostics, V2) code reader?
Very simple to use and WELL worth getting one and taking the time to learn how to use it to check if the computer has noticed and listed any problems.
OBD II code list
Very simple to use and WELL worth getting one and taking the time to learn how to use it to check if the computer has noticed and listed any problems.
OBD II code list
Elmer
Thread Starter
Melting Slicks
Joined: Oct 2016
Posts: 3,340
Likes: 2,084
From: Lehigh Valley PA
Ditto...same with me. Running at 220 then creeps up to 260...for maybe 10 to 12 seconds then goes back down to 220... Maybe 20 min later...same thing. This may repeat 3 to 5 times - then it stops altogether until I drive her the next day. I do get the "Engine Hot - Idle Engine" indicator on the dash only once in a while, not everytime.
But I get no other warning or error lights/messages - same as Elmer
But I get no other warning or error lights/messages - same as Elmer
Last edited by Mayor111; Jun 13, 2018 at 09:21 PM.
Melting Slicks
Joined: Aug 2016
Posts: 2,761
Likes: 1,016
From: MOUNTAIN HOME Arkansas
Really does (to me) seems to indicate a thermostat problem such as staying closed too long, then opening finally. Have had other cars that would do this till replaced thermostat. If your car is "new to you", with a previous owner, it is possible he went to a aftermarket 160/170* thermostat & some of them, according to posts have had design problems leading to failure. JMO Good luck!
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Burning Brakes
Joined: Oct 2019
Posts: 1,110
Likes: 119
From: USA
My car was running 180 and I took it in for a flush and fill since it had been 5 years and the previous owner said it was due. He changedt the stat while he was in there to the stock 180 stat, said there was a 180 stat in there but it was the wrong one an didnt have the second spring on it. He flushed out all the dexcool which he said was clean and refilled with regular anti freeze. Now the car runs 206 under the same circumstance that it was running 180. Makes me want to put the old thermostat back in. Called the mechanic just now it said that is the right temperature and better for longevity and it will make moer sense to the computer also so wierd things dont happen. I dont know if thats true. Instinctively I like 180 for more power and more wiggle room if something goes wrong. Is my mechanic right or not? I paid over 400 bucks for oil change and filter, flush and fill coolant and new thermostat. It seems high to me. Did I pay too much?
Burning Brakes
Joined: Dec 2017
Posts: 917
Likes: 708
From: Sidney, Vancouver Island
What year is your car ?..
If it is a C4 like your avatar, it was quite common to change out the thermostat to 160'.
Mr. Mayor ...did you ever find out what your original problem was?
If it is a C4 like your avatar, it was quite common to change out the thermostat to 160'.
Mr. Mayor ...did you ever find out what your original problem was?
Last edited by dyoung; Feb 12, 2020 at 05:53 PM. Reason: changed temperature of replacement stat.
Burning Brakes
Joined: Oct 2019
Posts: 1,110
Likes: 119
From: USA
what was the stock one supposed to be? The one that was in there was a 180 but it was a different kind that didnt have the bottom spring. He installed a new one that is supposed to be stock 180 but now it runs 210 or so.
Burning Brakes
Joined: Dec 2017
Posts: 917
Likes: 708
From: Sidney, Vancouver Island
Garak,,,what year is your car?
Edit....Looked at your profile and it says you have a 96. ( must be nice in dark purple and rare with 320 built in 96 )
You need to go to the C4 section with your question. Big difference between C4 & C7...
I had 4 C4s but don't remember the exact specs on them, but I do remember the concern with what we thought at the time as high coolant temperatures which turned out to be wrong..
Edit....Looked at your profile and it says you have a 96. ( must be nice in dark purple and rare with 320 built in 96 )
You need to go to the C4 section with your question. Big difference between C4 & C7...
I had 4 C4s but don't remember the exact specs on them, but I do remember the concern with what we thought at the time as high coolant temperatures which turned out to be wrong..
Last edited by dyoung; Feb 12, 2020 at 02:11 PM.
Moderator emeritus
Joined: Jun 2001
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From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
Burning Brakes
Joined: Dec 2017
Posts: 917
Likes: 708
From: Sidney, Vancouver Island
Burning Brakes
Joined: Oct 2019
Posts: 1,110
Likes: 119
From: USA
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,951
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
