Overheating! Help!
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Joined: Jul 2007
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From: Kansas
Overheating! Help!
I have a 79 and she performs well, or use to. I have a heater core leak and when it would leak it would fog up my inner windshield. So to remedy this because im poor, I took off the hoses to the core and from the core. Then I used an intermediat hose from the water pump back into the intake. and filled it back up with antifreeze that leaked out.
I thought this was a quick remedy right? NOPE. Now whenever I drive, she overheats very quickly. So quickly that i cant drive it!!!
Why is it doing this? I cant figure it out!!!!
I thought this was a quick remedy right? NOPE. Now whenever I drive, she overheats very quickly. So quickly that i cant drive it!!!
Why is it doing this? I cant figure it out!!!!
Melting Slicks
Joined: Apr 2008
Posts: 2,621
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From: Russell Ontario
St. Jude Donor '09
hot
You may still have a vapour lock "or an air pocket in the system" , start the eng, and carefully loosen a hose clamp and let it "burp out" while the car is warming up it may take a few minutes. Your car should be able to run fine with no core, Ron
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Joined: Jul 2007
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From: Kansas
wow
ok, i will try that when its cold. Its cooling down now. I almost lost hope. It just seems to give me trouble these past couple of days. I will post back and let you know what happens. Thank You again
Drifting
Joined: Feb 2008
Posts: 1,512
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From: New York
I wouldn't think bypassing the heater core would cause enough air to get in and not be pushed fully out. Generally its air trapped under your thermostat that will cause it not to open and overheat.
Do you have the electric radiator fans?
Stay away from the Dex-Cool antifreeze, that can cause major problems w/ any air in the system, expecially if you overheat, it did a number on my truck radiator in a very short time (20 miles). I believe most of the Prestones are Dex clones but just as many say they haven't had problems with it.
Simple green is the way to go and change yearly or so.
If your overheating out somewhere, leave off the rad cap and drive it back , watching that temp gauge.
A new thermostat might be worth a try also.
Do you have the electric radiator fans?
Stay away from the Dex-Cool antifreeze, that can cause major problems w/ any air in the system, expecially if you overheat, it did a number on my truck radiator in a very short time (20 miles). I believe most of the Prestones are Dex clones but just as many say they haven't had problems with it.
Simple green is the way to go and change yearly or so.
If your overheating out somewhere, leave off the rad cap and drive it back , watching that temp gauge.
A new thermostat might be worth a try also.
Drifting
Joined: May 2005
Posts: 1,629
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From: Somers CT
I had a similar problem which turned out to be an air pocket. I finally resorted to draining some of the coolant so I could get the thermostat goosneck off then jacking up the front end pretty high and filling the block with coolant. Then drilled a small hole in the stat, reinstalled the stat and goosneck and filled the radiator making sure the top hose was full then let the car down and top off the radiator.
This seemed to work for me, I was having a bitch of a time with it before this.
This seemed to work for me, I was having a bitch of a time with it before this.
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Joined: Jul 2007
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From: Kansas
Thanks for the replies! What I ended up doing was exactly what you said! I took the front passenger wheel up and sqeezed the radiator hoses untill my radiator actually burped!
I did have vapor lock in the system. Wow, I was getting frustrated.
but glad that the corvetteforums saved the day again! 
You guys rock! Thank You!!!!!!
I did have vapor lock in the system. Wow, I was getting frustrated.
but glad that the corvetteforums saved the day again! You guys rock! Thank You!!!!!!
Pro
Joined: Sep 2002
Posts: 624
Likes: 1
From: Melbourne, Fla. 6 months- New Middletown, Ohio 6 months
I had a similar problem which turned out to be an air pocket. I finally resorted to draining some of the coolant so I could get the thermostat goosneck off then jacking up the front end pretty high and filling the block with coolant. Then drilled a small hole in the stat, reinstalled the stat and goosneck and filled the radiator making sure the top hose was full then let the car down and top off the radiator.
This seemed to work for me, I was having a bitch of a time with it before this.
This seemed to work for me, I was having a bitch of a time with it before this.
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Melting Slicks
Joined: Mar 2008
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From: North Bellmore Ny
St. Jude Donor '09
Melting Slicks
Joined: Mar 2008
Posts: 2,336
Likes: 1
From: North Bellmore Ny
St. Jude Donor '09
Thanks for the replies! What I ended up doing was exactly what you said! I took the front passenger wheel up and sqeezed the radiator hoses untill my radiator actually burped!
I did have vapor lock in the system. Wow, I was getting frustrated. but glad that the corvetteforums saved the day again!
You guys rock! Thank You!!!!!!
I did have vapor lock in the system. Wow, I was getting frustrated.
but glad that the corvetteforums saved the day again! You guys rock! Thank You!!!!!!
I have received so much help from the guys here. No books,NCRS (which I'm a member # 48708 of) has helped me more than right here at this site, So a second thanks goes out