2006 Chevrolet Corvette Logo
Anonymous Posted on Sep 01, 2010

Coolant temp rise to around 210 degrees when idling or in stop & go traffic bur drops back to around 196 when cruising. Is this normal?

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  • Posted on Sep 01, 2010
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Completely normal those readings are perfect this car comes with a 195 degree thermostat,210 is fine for stop a go traffic remember a cooling system with the proper amount of coolant in it and under pressure will not overheat till about 240 degrees your in great shape no conerns!!!!!...

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  • Posted on Sep 01, 2010
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Yes this is normal. As long as it is not overheating everything is fine. A modern engine will run at a temperature of around 200 to 220 degrees. The fan will normally come on at around 210 degrees.

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What I would Do Is Get a multimeter tester and verify Your gauge is reading correctly by taking the actual temperature of your coolant when the gauge says its hot Don't Laugh i have seen factory gauges be off as far as 25 degrees many times. If it is not the fans, temp sensor, fan relay, I would get a wiring schematic and be Checking for a bad ground. most likely your problem. although if you do some research you will find out that the fans are controlled by the cpu and it is not uncommon for them not to kick on till it reaches temp of 200-240 degrees and that is normal. also i would fill your coolant and bleed the air out of the cooling system. Also there are two cooling fans. don't be confused only one runs to cool the radiator and the other fan runs when you run the A/C. If you turn your air on and the fan 2 does not kick on most likely you need to add refrigerant also.

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My 2008 hhr ss temperature goes from 196 to 210 on the road. Can I drive 1001 miles? While driving the coolant system goes down and then goes up when it's parked. Is it good or bad idea?

I'm fairly sure what you described is normal operation.
The thermostat opens at 195-197 degrees and the radiator fan kicks on around 225 degrees. So the normal range is between those numbers. And the coolant tank would rise when you turn the engine off because it stops flowing.
As long as the temp stays under 220 and you are not losing coolant you should be ok.
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What does it mean when my oil temp gage reads high but coolant temp reads in middle on Audi a4 Quattro 2.8 v6

It means the oil is hotter than the coolant or you have a bad gauge or sender. Oil temp and coolant temp are very loosely related to each other. Coolant temp should remain within 10 degrees of thermostat temperature once warmed up. I think that has a 196 degree thermostat so the coolant should be no lower than 196 and no higher than 206, tho up to 220 is relatively normal if it's hot out and/or you're running it hard. Oil temp is loosely regulated if at all, as long as it's not above 250 sustained or 300 in short bursts you're fine. Much above that and there's a problem, but it would most likely be a bad reading. It's hard to over heat the oil unless you're on a race track.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/oscar_403cc49e0f00cda7

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be sure to see if you may be a little low on your coolant but if that's all its doing feel good but your temp in your car shouldn,t go up all that much once it get to its running tempiture so keep a mental an physical eye on it but if it keeps going up an down specially when you give it gas an it goes up and down when you let off the gas you could have a problem
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Have you checked your cooling fan to see if it is working propely? Let the car idle and get warm and listen for the fan to kick in (if they are electric) or just watch to see if the fan starts to spin faster if it is the old school type with a clutch. Have you replaced the thermostat? A bad one will let the temp rise since it opens too late and then the temp will drop off. But it won't due this only at a light and it will do it infrequently.
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i would suggest making sure you have proper level of coolant in it and maybe go with a lower temp thermostat like a 140 or 160 degree
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Given your high guage temps of 210 degrees and high ambient temperature of 100 degrees, your engine's stalling can very likely be linked to either one of these three causes: 1) vapor lock; 2) percolation; or 3) PCV malfunction. Here's a really good diagnostic article that precisely addresses this issue of yours:
http://yourhandymanzone.com/Your_Handyman_Zone_How_To_Pages_Vehicle_Car_Zone_Cars_Trucks_Vans_Engine_System_Engine_Stalls_When_Hot.htm

Hope this helps! Brad
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first with the car off and cool squeeze bottom radiator hose with your hand then do the top,this burps any air out of the system,of course have the cap open,if this doesnt solve the problem its your radiator cores are block as you speed up its trying to force coolant thru a blocked core and temperature rises,you can pull your raidiator and have it cored at a radiator shop,cheeper than buying new
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