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Overheating? #4102314 05/20/16 08:48 PM
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powayroger Offline OP
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Hi:
I have a 2011 Hyundai Elantra. I also have a scanguage in all of my vehicles. Yesterday as I was heading home, I was at a stop light and noticed that my radiator temp was at 204 degrees instead of the usual 195-197. When I got on the freeway, my temp dropped back to normal. I noticed that while I was moving at a good rate, my temps stayed normal, but a soon as I slowed down to stopped, that is when my temps would move above normal. I did make it hope, with my heater basting. When I got home, I checked my fluid levels and all was normal

I'm figuring the issue is probably with a fan not kicking over. Any thoughts?


2011 Hyundai Elantra GLS Auto
2016 Honda Pilot LX
Synthetic oil, Tufoil and Marvel Mystery Oil fan
Re: Overheating? [Re: powayroger] #4102321 05/20/16 09:00 PM
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01rangerxl Offline
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204*F isn't overheating. Warmer than it should be, but potentially damaging overheating is going to be somewhere past 225*F in most any modern car.

It could be a fan. Have you watched the fan at idle when up to operating temp?


2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 236K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 202K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 254K miles
Re: Overheating? [Re: powayroger] #4102322 05/20/16 09:01 PM
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dishdude Offline
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^ What he said. I wouldn't be concerned about 204. 215-220+ is getting warm.


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2019 Tiguan
Re: Overheating? [Re: powayroger] #4102325 05/20/16 09:05 PM
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Nitronoise Offline
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check to see if your fans are drawing any current
204 205 is not to bad , my Buick fans used to to kick in at 224 F until I had my tune guy reset the fan controller to 195


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Re: Overheating? [Re: powayroger] #4102328 05/20/16 09:08 PM
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Chris142 Offline
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Check back when it hits 240.


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Re: Overheating? [Re: powayroger] #4102331 05/20/16 09:15 PM
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The_Eric Offline
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Anything south of 220* is no cause for concern. Between 220* and 230*, you'd better start paying attention. By 240* you're in trouble.


2005 Lincoln Aviator 4.6 DOHC
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Re: Overheating? [Re: powayroger] #4102337 05/20/16 09:23 PM
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Rand Offline
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fans dont even come on until at least 205 unless you have A/C on.


2019 Jeep Cherokee Trailhawk 2.0T
2020 Hyundai Elantra "Value Edition"
Re: Overheating? [Re: Rand] #4102344 05/20/16 09:31 PM
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eljefino Offline
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Originally Posted By: Rand
fans dont even come on until at least 205 unless you have A/C on.



They do it on purpose, it's part of the EPA fuel economy cycle. This is why factory gauges are deadened-- you used to be able to see the normal changes in temp from climbing a hill. They want you to get hotter and thermally efficient for the 90ish seconds you idle in the specifically defined cycle.

Mid 90's saturn gauges were good for going 7/8 of the way to the red zone before the electric fan kicked on.

You should run the AC just to check the fan and that it works, but then run without while watching the scan gauge to reassure yourself that there is a set temp for the fan, and it's above 204. My saturn was 221. wink

Re: Overheating? [Re: 01rangerxl] #4102354 05/20/16 09:50 PM
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powayroger Offline OP
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But what about what is normal and now with it 7 degrees hotter all of a sudden? Had the same issue with my 08 civic and it was a fan.


2011 Hyundai Elantra GLS Auto
2016 Honda Pilot LX
Synthetic oil, Tufoil and Marvel Mystery Oil fan
Re: Overheating? [Re: powayroger] #4102360 05/20/16 10:00 PM
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HTSS_TR Offline
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My E430 never had engine temp above 95-98C even in mostly stop and little go traffic. But my S2000 did excess 205-206F occasionally in stop and go traffic, but the temperature dropped to mid 180F as soon as traffic resumed normal speed.


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'04 Honda S2000
'06 Volvo V70
'14 Honda Accord LX
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Re: Overheating? [Re: powayroger] #4102394 05/21/16 12:04 AM
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Kuato Offline
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7 hotter than what you saw last week.....

Fan not coming on,

water pump degraded and not pumping enough,

Radiator has a flow restriction/buildup,

or it's just warmer outside. IMO keep an eye on it for a few weeks.


Thick vs Thin test: 15k / 43k miles complete
Re: Overheating? [Re: powayroger] #4102403 05/21/16 12:17 AM
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UltrafanUK Offline
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Originally Posted By: powayroger
Hi:
I have a 2011 Hyundai Elantra. I also have a scanguage in all of my vehicles. Yesterday as I was heading home, I was at a stop light and noticed that my radiator temp was at 204 degrees instead of the usual 195-197. When I got on the freeway, my temp dropped back to normal. I noticed that while I was moving at a good rate, my temps stayed normal, but a soon as I slowed down to stopped, that is when my temps would move above normal. I did make it hope, with my heater basting. When I got home, I checked my fluid levels and all was normal

I'm figuring the issue is probably with a fan not kicking over. Any thoughts?


Yes, remove the gauge and you will be a safer driver!

Recent research has shown that cars with fewer gauges and play things (Navi or Internet boxes) have less accidents. Top of the list are cell phones, with the Navi second.

I don't even like warning lights, as they should fit audio alerts, with a bell for get off the road and switch off warnings (Overheat or low oil pressure) and a less obtrusive chime for things like brake light failure etc.

The difference between 197 and 204 is not enough to get concerned about, but if it does start increasing then the thermostat might be forked, as they don't last forever. If you change the water pump every cam belt service and use something sensible, a water pump failure will be very unlikely. Incorrect bleeding of the cooling system is more likely than pump trouble, so if in doubt read the instructions.

Last edited by UltrafanUK; 05/21/16 12:23 AM.
Re: Overheating? [Re: powayroger] #4102416 05/21/16 01:36 AM
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Jetronic Offline
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With a 1.4 bar (20 psi) pressure cap and a coolant mix in there, I'm not fussed until I go at least 240F. After that I'll slow down though, but the red is still 20F off.

But so far I've never seen the temp even hit 200F


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Re: Overheating? [Re: powayroger] #4102422 05/21/16 02:02 AM
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Merkava_4 Offline
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Find out at what temp the fans are supposed to come on.
My fans come on at 216F and then go to high speed at 226F.
With A/C on, they're on all the time.

Re: Overheating? [Re: powayroger] #4102423 05/21/16 02:13 AM
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DoubleWasp Offline
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Fans on my Roadmaster don't even try to intervene until almost 230 degrees.

7 degrees hotter? A small change in weather alone can do that. Heck, your sending unit may be to blame.


07 Lincoln Navigator M1 0w-40/FU
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