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Recently the temperature guage has been saying that my engine is overheating when Ive only driven a few blocks. Then the guage will drop to normal (about halfway). Its kind of erratic.
I just replaced the radiator so it shouldn't be a broken radiator.

I also noticed that there is smoke coming from the area of the manifold when the engine is running.

I also go through engine oil really quickly.

Could these things be related?
Any ideas what the problem might be?

Thanks!

I have another post regarding the car not accelerating. Perhaps this problem is related to my other problems.

 
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When you changed your rad did you properly bleed the air out of the system?

 
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Yah, I think there must have been air in the radiator. No, I didn't bleed the air out and this morning I managed to pour about a 1/4 of a jug of coolant into it even though I "filled" it up when I put in the new one.
After adding the coolant it isn't overheating.

Thanks for your help.

 
Rep Power: 314

There is a procedure on this website for how to properly bleed the air out of your cooling system. It involves the heat being on full blast and such. I highly suggest you follow it, so you don't have any more problems. It's easy to find if you search for it, and its a bit more involved, most people don't do it right until they read up on it.

 
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Greta, thanks!