overheating
Thread Starter
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Mountain Pass
Joined: Jan 2001
Posts: 130
Likes: 0
From: Ozark Arkansas
overheating
i have a 79 f-150 with a 460 in it. i can drive about a mile and it will overheat. it will blow about half of the water out of it. the temp gauge doesn't work so i dont know how hot it is getting. i was wondering if anyone could help.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
overheating
Allen, sounds like the thermostat is not opening or the water pump is shot. Have you done anything to the truck recently?
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
overheating
It's got to be the thermostat then. If it is flowing and has a good 50/50 mix, it shouldn't get hot this time of year. You can take it out and run the truck, and see if it still gets hot.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Thread Starter
|
Mountain Pass
Joined: Jan 2001
Posts: 130
Likes: 0
From: Ozark Arkansas
overheating
will it overheat if i dont have the antifreeze and water mixed right. its not 50/50 its more like 75-25. i had the heater core blow out the other day and i just put antifreeze it it
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Mountain Pass
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From: Ozark Arkansas
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Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
overheating
Allen, help us out here guy, you start out with a cooling problem, then you state that you haven't done much to the system, then you say that the heater core blewout. 
It is hard as heck to help you when we don't have the facts to work on. We can't see, or touch it.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
It is hard as heck to help you when we don't have the facts to work on. We can't see, or touch it.
John
jowilker
66 F100s
In the still cool hours of the night,
you can hear chevys rusting away.
Thread Starter
|
Mountain Pass
Joined: Jan 2001
Posts: 130
Likes: 0
From: Ozark Arkansas
overheating
ive blew two heater cores since i have had the truck. i replace the first one. it never got hot after i replaced it. then saturday i blew another one. but since then it has been running hot. i put a new thermostat in it today. it is running a little cooler. i was thinking that maybe it could be that we took the 400 out of it and put the 460 in it and didnt change the radiator. could that have an effect on it.
Posting Guru
Joined: Dec 2000
Posts: 1,686
Likes: 1
From: Racine WI
overheating
[font size="1" color="#FF0000"]LAST EDITED ON 09-Jan-01 AT 06:08 PM (EST)[/font][p]shouldnt matter if its a 4 core which alot of those doggy 400's did try a 7pound cap if your forever blower heater cores
Senior User
Joined: Dec 2000
Posts: 245
Likes: 0
overheating
This truck has seen a few days behind her. I'd be willing to bet money that the radiator needs to be rodded out. Over time calcium deposits build up and clog the tubes. The tubes on this radiator sit vertically. The tubes will be clogged at the bottom where you can't see.
Fleet Mechanic
Joined: Nov 1999
Posts: 1,415
Likes: 0
From: Lower 48
overheating
OK, let's get real simple here. Bypass the heater core for now. Then pull the thermostat out and take it for a spin. At this point the anti freeze mix won't make one bit of difference if the block isn't frozen. If the overheating goes away, then put in a new thermostat (about 180 degrees). If you can still drive it and everything seems good, then re-connect your (new) heater core. If things seem to be working at this point then put in new anti freeze and you should be set.
Trail Rider
Trail Rider