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2003 3.4l Impala Overheating Issue?

 
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Connersdad19
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PostPosted: Tue Dec 20, 2011 6:09 pm    Post subject:  2003 3.4l Impala Overheating Issue? Reply with quote

I am not sure how to go about fixing this so I have turned to the forum for help. I have searched but was not able to find the exact answer that was needed, so I hope I will be able to get some help. My cars temperature gauge is fluctuating from half way on the temp gauge all the way to the red and the car will start to beep and it says something along the lines of hot coolant, etc. I also have noticed that I will have heat for a few minutes and then the heat just goes away. So far I have replaced the thermostat, temperature sensor, and I have flushed the cooling system. I checked it today and it seems as if the overflow tank is almost full. Not sure what could be causing this.

Any ideas in what I should do next is greatly appreciated.

Thanks.

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ZSPOT
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PostPosted: Tue Dec 20, 2011 6:39 pm    Post subject:   Reply with quote

Overflow tank doesn't have much to do it. It's for overflow. What's the level in the radiator? Have you replaced the radiator cap? It may not be keeping pressure.

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Connersdad19
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PostPosted: Tue Dec 20, 2011 6:41 pm    Post subject:   Reply with quote

All i know is, is that i filled the radiator up after i flushed it today. Never thought about the cap... I will have to try that...and i will report back.

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PostPosted: Tue Dec 20, 2011 6:45 pm    Post subject:   Reply with quote

Was it close to overheating before the cooling system was opened up and flushed, or is this only since then? I would bet you still have alot of air in the system. A 3.4L can be a real PITA to bleed.

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Connersdad19
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PostPosted: Tue Dec 20, 2011 6:47 pm    Post subject:   Reply with quote

yeah before i flushed the radiator it was doing that. The bleeder on the thermostat housing was snapped off by the previous owner. Is there another way to "bleed" it without the screw?

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Brigoyanks
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PostPosted: Tue Dec 20, 2011 6:55 pm    Post subject:   Reply with quote

Connersdad19 wrote:
yeah before i flushed the radiator it was doing that. The bleeder on the thermostat housing was snapped off by the previous owner. Is there another way to "bleed" it without the screw?


theres two bleeder valves i circled them in blue

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Last edited by Brigoyanks on Tue Dec 20, 2011 6:56 pm; edited 1 time in total
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Connersdad19
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PostPosted: Tue Dec 20, 2011 6:56 pm    Post subject:   Reply with quote

Ok I see the other one....Is it alright if that is the only one that will bleed?

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PostPosted: Tue Dec 20, 2011 6:57 pm    Post subject:   Reply with quote

Well, there are two on a 3.4L. One on the bypass tube that sticks up from the front engine cover,.. and one on the outlet tube after the thermostat.

Meh,.. too late. Laughing

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Connersdad19
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PostPosted: Tue Dec 20, 2011 6:58 pm    Post subject:   Reply with quote

the one on the outlet tube is the one that the tip broke off of.

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PostPosted: Tue Dec 20, 2011 6:58 pm    Post subject:   Reply with quote

not sure i don't see why not....

wouldn't hurt to try
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Connersdad19
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PostPosted: Tue Dec 20, 2011 10:24 pm    Post subject:   Reply with quote

I just bled the system and even went and bought a new radiator cap but its still over heating. Anymore ideas that I can try?

Thanks for the help thus far.

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