Heater core
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Lead Driver
Joined: Apr 2007
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From: Houston
Heater core
Im thinking of replacing my heater core but i see theres a high out put. Wanted to ask if the high output will work in place of a standard out put unit without a/c. There is no mention of the high output being ac or non ac.
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Joined: Jan 2001
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From: Virginia
Box must be different, since it says "high output" molded into the box. I think we have come to the conclusion that the high output was only available without A/C. So if you have A/C, it's not going to fit anyway.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
1980/86 F100/350 & Bronco:
E3TZ-18476-H .. Heater Core-Use with standard heater (6" wide).
E3TZ-18476-F .. Heater Core-Use with high output heater (7 1/2" wide).
E3TZ-18476-G .. Heater Core-Use with factory installed integral A/C or Hi/Lo Comfort Vent System.
E3TZ-18476-H .. Heater Core-Use with standard heater (6" wide).
E3TZ-18476-F .. Heater Core-Use with high output heater (7 1/2" wide).
E3TZ-18476-G .. Heater Core-Use with factory installed integral A/C or Hi/Lo Comfort Vent System.
Post Fiend
Joined: Jan 2000
Posts: 5,330
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From: Dryden, ON, Canada
Oops, looks like my computer ate most of my post. The Hi-Output unit uses a different box under the hood, it actually has hi-output embossed in it:
The cab side is the same, I put that one in my truck in place of a standard one.
The cab side is the same, I put that one in my truck in place of a standard one.
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Lead Driver
Joined: Apr 2007
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From: Houston
Mine is a standard one. I took and ordered at work since it was slow from our local shop a replacement copper heater core for a standard truck. Figured since it was built/sold in Tx it wouldn't have the high output heater core. Sure enough I was right the standard core fit just right. I even took and sealed the blend door with some house hold foam strips that is tacky on one side.
I don't know what it was but I could flush the heater core out water would come through what I thought was very quickly and easily. But wouldn't put out much heat. New heater core the needle just starts to move up to the C mark on the temp gauge and its already blowing air as warm as it was after running for nearly an hour. I also saw staining pointing to a leak on the core. Probably where my coolant was going and why I kept having to add half a gallon to a gallon of coolant every 2 months or so.
I don't know what it was but I could flush the heater core out water would come through what I thought was very quickly and easily. But wouldn't put out much heat. New heater core the needle just starts to move up to the C mark on the temp gauge and its already blowing air as warm as it was after running for nearly an hour. I also saw staining pointing to a leak on the core. Probably where my coolant was going and why I kept having to add half a gallon to a gallon of coolant every 2 months or so.
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