Engine overheating

[crazycanuck]

Would high RPM driving cause your engine to overheat?

Not to the point of redlining, but say you accelerate up to 5000RPM in first gear.

[3GFX]

Yes! After a period of time it definitly would. At higher RPM you're generating more heat. There's greater friction, and more stress which all disipates as heat throughout the engine. Mind you it wouldn't overheat until a little while.

[nicker]

I wouldn't advise with driving around at that RMP all the time anyway, thats just abuse.

[crazycanuck]

Ah..

I got carried away a little last night. Revved up in first until 5000, then switched to second and did the same thing.

This morning driving to work, I revved up past 3000 and the car seem to bog down and the heat gauge went up.

Is this expected? Since the car is just recovering from last night's episode.


Yes! After a period of time it definitly would. At higher RPM you're generating more heat. There's greater friction, and more stress which all disipates as heat throughout the engine. Mind you it wouldn't overheat until a little while.

[Flagrum_3]

Ah..

I got carried away a little last night. Revved up in first until 5000, then switched to second and did the same thing.

This morning driving to work, I revved up past 3000 and the car seem to bog down and the heat gauge went up.

Is this expected? Since the car is just recovering from last night's episode.

Did you rev it to 5k just once or twice or for the whole evening? :chuckle

If you did so only once or even a few times, it should not effect anything, except maybe clean out some carbon. :) ...Occasionally I will run it thru the gears to redline, including first, sometimes 2 or 3 times in succession and have never had a problem.

It could be just a sensor blip, or an air pocket in your coolant system; but this would show itself more frequently....if it persists I suggest you have it checked out.

_3

[06Touring3]

yes definetly monitor it over the next day and if it continues get it checked out ASAP

[kaval]

Check your coolant level. You may have an air pocket as previously mentioned. Or the thermostat isn't opening up.

[crazycanuck]

felt ok driving home today. I kept it easy.

I know what an air pocket is, but how does it form in the engine?

[Fuman]

Ah..

I got carried away a little last night. Revved up in first until 5000, then switched to second and did the same thing.

This morning driving to work, I revved up past 3000 and the car seem to bog down and the heat gauge went up.

Is this expected? Since the car is just recovering from last night's episode.
if your heat gauge is going PAST the normal point, then you should get your car checked.
even with track driving, the needle never goes past the normal point

[kaval]

felt ok driving home today. I kept it easy.

I know what an air pocket is, but how does it form in the engine?

Not quite sure...maybe you have a leak in one of your hoses?

[Flagrum_3]

felt ok driving home today. I kept it easy.

I know what an air pocket is, but how does it form in the engine?

There's several ways an air pocket can develope in an engine; a slight leak anywhere in the system or a bad radiator cap or your fluid level is low just to name a few.But, whatever the cause, as I mentioned before it should show continuous signs that something is wrong.So if that one time was the only time, just check your level and if its fine it was probably just a sensor blip, if the level is low and you continue to notice the temp guage going up; have the system and cap pressure tested for leaks and 'burp' the system or get a complete reflush of the system.


_3

[crazycanuck]

I flushed it 3 weeks ago, so it can't be that.

The only thing I can think off, is I removed the front plate and put it off to the side. A lot of members have done that with no problem in heat increase. But it does block half the radiator...



There's several ways an air pocket can develope in an engine; a slight leak anywhere in the system or a bad radiator cap or your fluid level is low just to name a few.But, whatever the cause, as I mentioned before it should show continuous signs that something is wrong.So if that one time was the only time, just check your level and if its fine it was probably just a sensor blip, if the level is low and you continue to notice the temp guage going up; have the system and cap pressure tested for leaks and 'burp' the system or get a complete reflush of the system.


_3

[Flagrum_3]

I flushed it 3 weeks ago, so it can't be that.

The only thing I can think off, is I removed the front plate and put it off to the side. A lot of members have done that with no problem in heat increase. But it does block half the radiator...

Well I think there's your answer! I was thinking of asking if you had it flushed recently but expected you would have mentioned it! ........You have an air pocket for sure....whomever did the flush did not wait for the system to "burp" as they call it, when refilling the system....So as I said before have it checked or burp it yourself!!


_3

[crazycanuck]

How do I burp the system myself?


Well I think there's your answer! I was thinking of asking if you had it flushed recently but expected you would have mentioned it! ........You have an air pocket for sure....whomever did the flush did not wait for the system to "burp" as they call it, when refilling the system....So as I said before have it checked or burp it yourself!!


_3

[Flagrum_3]

How do I burp the system myself?

Instead of me writing a long explanation here just do a Google search on "Burping the Coolant System" ...its actually pretty simple and part of the process when refilling the system....just make sure you have your heater settings on full when doing it!!


_3

[crazycanuck]

Thanks _3.

For all others interesting in burping their coolant system, here are the steps:


Step1
Add a mixture of one-half water and one-half antifreeze to the radiator. Fill it right up to the top.

Step2
Fill the overflow/coolant reservoir with the same 50/50 mixture.

Step3
Leave the radiator cap off, turn the engine on and let it run until the radiator "burps": You will see the coolant level drop and may see or hear a large air bubble come to the top as the system burps.

Step4
Keep an eye on the temperature gauge throughout this process.

Step5
Refill the radiator to the top and coolant reservoir as needed.

Step6
Put the radiator cap back on.

Step7
Note that if the engine runs hot after this procedure there may have been another pocket of air that "burped." Let the engine cool down and then add more coolant to both the radiator and the coolant reservoir.