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| Fiero Heater Core Replacement (Page 2/5) |
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Frizlefrak
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DEC 29, 03:58 PM
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OK, mine is done. No more stench, no more slimy windows. Not too bad....the only snag I ran into was getting the hoses off of the old heater core....which if I had read and heeded this first......
| quote | Originally posted by FieroG97J:
Harbor freight has a tool you will need. It looks like an ice pick, but it has two right angle bends in it so the sharp point is pointing back at you when it is in your hand. (sorry mine is not available for picturing) Along with some lighter fluid (no flame) or some paint thinner, you need this tool to get the hoses off the nipples on the heater core. CAREFULLY insert the hook between the hose and the nipple from inside the front compartment and after applying copious quantities of solvent to the crack between the hose and the nipple, work the hook around the joint to loosen the hose. |
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.......wouldn't have been such a struggle. Took me 45 minutes to get the damn hoses off. They literally weld themselves on. Next time (if there is a next time) I will just cut them and put in a splice and call it a day. At any rate, hoses notwithstanding, I could change the next one in 30 minutes.
Thanks again to all who contributed to this thread. 
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Frizlefrak
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DEC 29, 04:02 PM
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Here's what I found when I opened mine up.....no wonder it stunk so bad....
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Two88GTs
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DEC 29, 04:50 PM
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If you don't have the tool to disengage the hoses from the old heater core, you can take a dremel or a hacksaw blade and just cut off the pipes coming from the heater core right at the firewall(don't worry, your old DEAD heater core won't mind)
once you have access to the end of the house, you can deform the remaining pipe piece with needle-nose pliers and then get them off.
i had to replace the heater cores on both of my GTs back in the day.------------------
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Frizlefrak
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JAN 01, 11:27 PM
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| quote | Originally posted by Two88GTs:
If you don't have the tool to disengage the hoses from the old heater core, you can take a dremel or a hacksaw blade and just cut off the pipes coming from the heater core right at the firewall(don't worry, your old DEAD heater core won't mind)
once you have access to the end of the house, you can deform the remaining pipe piece with needle-nose pliers and then get them off.
i had to replace the heater cores on both of my GTs back in the day.
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I was almost to that point when my top one broke free. Dremel and cutting wheel were coming out very soon.
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theogre
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JAN 02, 12:14 PM
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| quote | Originally posted by RWDPLZ:
From this point, installation is the reverse of removal. Follow theogre's procedure to burp the cooling system to remove any air that was introduced as a result of opening it up.
http://home.comcast.net/~fierocave/coolfill.htm |
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I've updated that page and Change the filling procedure...
Why?
Most of us, myself included, removed the Thermostat during Fill operation. That will work to fill if engine or radiator was low/empty but heater need the Thermostat in.
By installing the Thermostat each time before running the engine, the system will force coolant thru the heater core and burp the air out to the engine. (See Thermostat or heater article... show plumbing path.)
You shouldn't need to mess w/ the heater hose but still there if you have problems.
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Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)[This message has been edited by theogre (edited 01-02-2012).]
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RWDPLZ
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FEB 16, 08:55 PM
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More info to add: This is the later 86-88 heater core cover, it has the bracket for the cars with the Performance Sound option, so the subwoofer can mount under the dash, but all 86-88 cars had this cover. I bolted it up to my 84 heater box, and it fits and seals perfectly, just as the original did, so they are interchangeable.
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E.Furgal
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MAR 27, 05:19 PM
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nice this is great..
will save me tons of time..
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Doober
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MAR 27, 09:21 PM
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If your fingers are nimble enough and you have the right sockets (I used a 1/4" drive deep well 7mm / 9/32" and a ratchet) you can remove that top screw without removing the speaker, it's how I did mine.
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waynrayn
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MAR 30, 10:18 PM
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Hi there:
I have an '87 Fiero which needs heater core replacement.
However, the pictures above appear to be from an earlier model. The heater core looks like it's easily accessible to the right underside of the passenger area.
Mine is over to the left, with a large black unit in front of it. I thought this Fiero had air conditioning, but the tubes are wide apart, so it appears to be the non-
air conditioning type.
It appears infinitely easier to go under the dash, but I'm not sure where to start. I've included a link to a picture of how this looks. This is taken from the open passenger door, looking to the left.
Can someone please advise as to how to remove this type of cover?
Thanks very much...
http://waynrayn.shawwebspac...w/fiero_heater_core/
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Doober
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MAR 30, 10:29 PM
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The pictures may look different, but it's the same. Mine is an '87 and is identical to the pictures
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