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[Z06] Water temp??

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Old Sep 8, 2013 | 10:41 AM
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Default Water temp??

Hello guys,

Yesterday I was driving my vette in 100 degree plus weather and had to stop in traffic for about 15 minutes or so. When I'm driving the temp is about 212 or so but when I stop it traffic it rises to 230. I was wondering if this is normal for he c5s. Or if you guys can tell me what your experisnce with your max temp in your car.

Thank you
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Old Sep 8, 2013 | 10:57 AM
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Pretty normal to me. Make sure your air conditioning is on, the engine will run cooler.
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Old Sep 8, 2013 | 11:10 AM
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Originally Posted by fastblaze23
Hello guys,

Yesterday I was driving my vette in 100 degree plus weather and had to stop in traffic for about 15 minutes or so. When I'm driving the temp is about 212 or so but when I stop it traffic it rises to 230. I was wondering if this is normal for he c5s. Or if you guys can tell me what your experisnce with your max temp in your car.

Thank you
Fastblaze, I'm not sure if you've done a t-stat swap, but if you haven't I would consider it. Mine is a head, cam, and headers car and it runs a 160* stat. Yesterday, mine got up to a high on 185*. Also, check your reservoir to make sure its full. We had a friend in our Vette group that changed to a Dewitt's b/c he was seeing temps in the area you're talking about here, and when he went to swap the radiator out, he noticed his reservoir was just about empty.

Being a DFW guy, jump on our SW thread

http://forums.corvetteforum.com/sout...a-21-a-35.html

Also, we meet weekly at a restaurant in Plano. Check out the thread. Post 1 gives you details of where we meet and things we do.
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Old Sep 8, 2013 | 11:28 AM
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427,
My buddy just bought a vette and wehave been looking for other guys with vette in the Dallas area. I sent him a message and his temp got to 248 yesterday! We'd be down to meet with everyone and have food and a few brews.
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Old Sep 8, 2013 | 11:36 AM
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Originally Posted by fastblaze23
427,
My buddy just bought a vette and wehave been looking for other guys with vette in the Dallas area. I sent him a message and his temp got to 248 yesterday! We'd be down to meet with everyone and have food and a few brews.
Well, that's what we do! Come out and meet a great group of Vette friends. It's made up of mostly C5Z guys, but there is a variety of C6's, C4's, and C3's. there is a bunch of great knowledge we share, and we have the C5 pretty well vetted.

I'd really consider a 160* t stat, and a tune to make the fans kick on at a lower temp. That'll help a bunch. If it still persist, and reservoir has the proper amount of coolant, the next things to consider will be the water pump (they're pretty cheap these days Scoggins dickey has them for $110) and radiator.
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Old Sep 8, 2013 | 02:41 PM
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230s is nothing to worry about as the fans wont even kick on until that temp under certain conditions. 248 would concern me. I bet there is a bunch of junk stuck in the radiatior and AC condenser. These cars are bottom feeders, getting air for cooling right off the road. So they suck up everything! It may be time to pull the radiatior covers and clean it all out.

I recently had my radiator out as part of my turbo build and it was covered in grass and leaves. The kicker is that I had just cleaned it all less than 2 years and 5k miles ago when I did my cam swap!



Not sure if that pic will work. Trying to post a link from my phone =/

Last edited by MawneeC5; Sep 8, 2013 at 10:57 PM.
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Old Sep 8, 2013 | 07:36 PM
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Originally Posted by ztheusa
Pretty normal to me. Make sure your air conditioning is on, the engine will run cooler.
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
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Old Sep 8, 2013 | 08:44 PM
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Originally Posted by Cruncher
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
I believe ztheusa is speaking to the fact that the high fan comes on sooner when the A/C is on.
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Old Sep 8, 2013 | 11:10 PM
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Originally Posted by fastblaze23
Hello guys,

Yesterday I was driving my vette in 100 degree plus weather and had to stop in traffic for about 15 minutes or so. When I'm driving the temp is about 212 or so but when I stop it traffic it rises to 230. I was wondering if this is normal for he c5s. Or if you guys can tell me what your experisnce with your max temp in your car.

Thank you
Am a brand new vette owner so don't have much experience with car heating up. I can only tell you that in traffic the most it goes up to is 220.
I read that you can install a manual high speed fan controller so that might be an option for you if you drive often in 100 degree plus weather.
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Old Sep 9, 2013 | 12:10 AM
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Guys, if you don't have a lower temp thermostat in, I encourage you to get one. I doubt you'll see temps anywhere near the numbers discussed here. Yes, are cars being bottom feeders do heat up due to picking up air off of the hot asphalt, but temps over 200 happen next to never for me and I'm here in Texas with a stock radiator, head, cam, header car.
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Old Sep 9, 2013 | 01:07 AM
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Originally Posted by 427ZM
Guys, if you don't have a lower temp thermostat in, I encourage you to get one. I doubt you'll see temps anywhere near the numbers discussed here. Yes, are cars being bottom feeders do heat up due to picking up air off of the hot asphalt, but temps over 200 happen next to never for me and I'm here in Texas with a stock radiator, head, cam, header car.
thermostat has NO impact what so ever on upper temps. the OE thermostat is well open by 200deg.

thermostats only control how cold your car runs, not how hot
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Old Sep 9, 2013 | 07:48 AM
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Originally Posted by racebum
thermostat has NO impact what so ever on upper temps. the OE thermostat is well open by 200deg.

thermostats only control how cold your car runs, not how hot
Yes, but if it is well open a full 40* cooler, it would definitely have a far greater impact on the engine it's trying to cool.
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Old Sep 9, 2013 | 10:28 PM
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Originally Posted by Cruncher
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
Cooling fans are PCM commanded to full speed with A/C on at speeds less than 35 MPH.
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Old Sep 9, 2013 | 10:39 PM
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Originally Posted by Cruncher
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
Next time you're idling, set your DIC to display the coolant temp. and turn the A/C. The temperature will drop.
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Old Sep 10, 2013 | 11:47 PM
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Originally Posted by Cruncher
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
Go to the corner and put on your "rookie" hat.
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Old Sep 11, 2013 | 09:20 PM
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that is pretty normal as long as the temp drops once you get moving again...as far as the cleaning goes every c5/c6 vette owner should clean between the ac cond. and rad. to knock all the stuff that stuck in there..pretty easy to do , also If your coolant has not be changed out I would drain as much as you can and replace with new dexcool that will help out as well!
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Old Sep 11, 2013 | 09:45 PM
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Originally Posted by 427ZM
Yes, but if it is well open a full 40* cooler, it would definitely have a far greater impact on the engine it's trying to cool.
True if your radiator has the copasity to cool, but the stock radiator doesn't. Once the temp goes above the thermostat opening temp, the coolent just continues to circulate passing thru the radiator and not getting cooled enough to lower the temp. This is called heatsoaking and will eventually over heat the coolant.

Just something too consider.

Mark.
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Old Sep 11, 2013 | 09:56 PM
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Originally Posted by Moto One
True if your radiator has the copasity to cool, but the stock radiator doesn't. Once the temp goes above the thermostat opening temp, the coolent just continues to circulate passing thru the radiator and not getting cooled enough to lower the temp. This is called heatsoaking and will eventually over heat the coolant.

Just something too consider.

Mark.
I'm with you, and agree. Just stating the point, its less likely to hit those temps. with a lower t-stat, that's fully open 40* cooler.
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Old Sep 12, 2013 | 01:21 AM
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Originally Posted by LS1 Goat 91
Next time you're idling, set your DIC to display the coolant temp. and turn the A/C. The temperature will drop.
AC on recirculate.
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Old Sep 12, 2013 | 10:03 PM
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Originally Posted by Cruncher
Huh??? When the engine overheats, the s.o.p. is to turn on the heater full blast. I don't know where you got your info from but it's incorrect; any rookie mechanic can tell you that. By the way, if I'm sitting in traffic, with 100 degree heat, my coolant temp goes to 220-225.
^I agree!^ GM Actually has my 04 GTP programmed to auto. turn the a/c system off if the car starts to over head, it come on the info display and says "shutting down a/c, cars over temp"

Back to the Zo6 temps.....
My temps are always lower w the a/c off than on by far!

I have a 160 stat and tuned for the fans to come on sooner than GM has set and w the a/c ON my temps hit 212

W the a/c off they hit 190 I just tested this yesterday in Ohio, we had our hottest day yet this year of 99
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