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Overheating Problems!!! What can it be ?

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Old 09-28-2007, 08:28 PM
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Wink Overheating Problems!!! What can it be ?

Ok guys let me start from the beginning.

About two weeks ago my car overheated while crusing. I pulled over, let it cool down, I then put some anti freeze and some water and it started leaking bad. Turns out the water reservoir had a crack and fluid was just coming out.

I then bought a brand new reservoir from GM and installed it. I then filled it up with fluid and it was good to go.

Now, today I was again just driving and I noticed it overheated. I pulled over and I went to go buy some anti freeze. I then came back and to my surprise the water reservoir was full of water.
I then opened the cap for the radiator and turned my car on and I could see the water in there moving so I know the water pump is working.


Now, My guess is that the fans are not coming on because my car was at like 220-230 and the fans were still not on. My car is all stock with just a GMMG catback.

Any guesses as to what it could be ???
And I also think it might be just a relay for a fan but how can I check them out ?

Thanks!
Old 09-28-2007, 08:52 PM
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Originally Posted by SS DNA
Ok guys let me start from the beginning.

About two weeks ago my car overheated while crusing. I pulled over, let it cool down, I then put some anti freeze and some water and it started leaking bad. Turns out the water reservoir had a crack and fluid was just coming out.

I then bought a brand new reservoir from GM and installed it. I then filled it up with fluid and it was good to go.

Now, today I was again just driving and I noticed it overheated. I pulled over and I went to go buy some anti freeze. I then came back and to my surprise the water reservoir was full of water.
I then opened the cap for the radiator and turned my car on and I could see the water in there moving so I know the water pump is working.


Now, My guess is that the fans are not coming on because my car was at like 220-230 and the fans were still not on. My car is all stock with just a GMMG catback.

Any guesses as to what it could be ???
And I also think it might be just a relay for a fan but how can I check them out ?

Thanks!
Does your car overheat while your driving or at a stop? I would definitely check and see if the fans are on. Also make sure you thermostat is not sticking.
Old 10-05-2007, 08:33 PM
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Anymore opinions ???

The car just overheated again yesterday. I just seen the temp going up and I pulled over.

I think my fans are not coming on sometimes..
Old 10-13-2007, 03:50 AM
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Up! I still need help
Old 10-13-2007, 10:14 PM
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turn your a/c on and see if the fans come on
Old 10-13-2007, 10:39 PM
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To repeat the previous question, does it overheat while driving or while at a stop? If it's when you're driving how fast are you driving?
Old 10-13-2007, 11:14 PM
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I wasn't getting the overheat, but I did replace my OEM stat with the Hypertech 160, flushed system completely, and added 50/50 Dex Cool and water. I'm running a constant 190.

I am also running e-fans with the Nelson harness.
Old 10-14-2007, 03:30 AM
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check your wiring the fan motors...or what you can do is...set it up so you turn it on manually...you will need a relay and some other **** i forgot bout
Old 10-14-2007, 02:23 PM
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Its actually only doing it when im slow driving around town.

My best guess its that the fans are not coming on, If thats the case, Do I need to replace them ?????
Old 10-14-2007, 02:28 PM
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Originally Posted by SS DNA
Its actually only doing it when im slow driving around town.

My best guess its that the fans are not coming on, If thats the case, Do I need to replace them ?????
I think its safe to say your fans are not working if YOU never see your fans working.

If its both of them it may not be your fans though. Check relays, fuses and all wires before you waste your time buying fans.

My fans are both original (9 1/2 years old) and they work perfectly, they rarely fail and last forever.

Also, make sure they come on "low" and "high" settings.


.
Old 10-14-2007, 02:57 PM
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Im gonna do an oil change and Im going to check everything out to see if theres anything wrong
Old 10-14-2007, 11:50 PM
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Ok well I checked everything and I ended up finding a blown fuse !!

I replaced it and Im now hoping that the problem will go away.

I drove it for a while and it didnt overheat so Im happy soo far!




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