Fiero Heater Core Replacement (Page 4/5)
RWDPLZ APR 02, 03:40 PM
Nice! I thought that would have ended up being more difficult than that.
Doober APR 02, 08:41 PM
Most definitely not a stock a/c setup lol
waynrayn APR 05, 01:18 AM
Bit of a delay there, but I've finally found time to reverse the process and put in the new heater core. Trying to fit it into the cavity through the narrow space between the aftermarket A/C and the back of the compartment was a challenge, but it's done. Everything else is put back.

I've read a number of postings about "burping" the coolant system after repairs. What is the best way to do this in a Fiero?

Thanks much...
fastest eddie OCT 20, 02:04 AM
thank you RWDPLZ for the write-up; great help (especially the top screw!); pictures - a thousand words!
Ry86GT OCT 26, 01:34 PM
Ditto! This thread was a huge help to diagnose my heater core failure and get to it. I had never experienced a heater core failure before so this was a first. I just got my new core so I will be removing the bypass I had temporarily installed and it will be going in this weekend. The best part about finding this thread was getting the broken one out, bypassed and getting the air box cleaned out. After that I was able to drive the car again without getting a massive headache from the fumes.

Only thing I have to note is that after getting the top speaker out and finding where the top screw in the air box was supposed to be my car did not have a screw installed. It does not appear that it had ever been taken apart before but I could be wrong. Especially since I found that my car is missing the "blue thingy dingy". Yeah another part to try and find...
tntcary APR 11, 03:24 AM
Bump for a Wonderful step by step!!! Made it a simple 35 min job, Thanks!

You can't get hoses off old heater core pipes??? Crush them and hose slips right off.

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Put the blow torch down please, its just a Fiero.

dbober APR 15, 12:17 PM
Thanks to those who posted and added to this step by step. It made the process so much easier!
jim94 JUN 07, 01:31 AM
Thanks for the help,87 a/c . As so not knowing if water would come out of the 2 hoses i clamped them. The fiero stores heater core came with plugs. Hoses off, plugs on., not a drop spilled .: out with the old or in with the new. Hoses on clamps off. No mess. When I put my inside cover back on I had to remove the metal bracket that pushes on the heater core so I could put the door on. On the inside where the metal hit plastic I removed the flat foam and put some sticky back felt for cushion. Everything is good a/c works and so does heat and no dripping or smell and no wife telling me what is this dripping here.
hobbywrench JUN 20, 09:19 AM
The hardest part was loosening the hoses from (my) short neck tube ferrules. I made a tool similar to what Fiero 97 described. I think I used either wire or thin sheet metal to create a U at the end which allowed you to go past the hose end, pull toward yourself and work around the tube. Use lube. I have not seen the H-Frt tool, but sound good.

[This message has been edited by hobbywrench (edited 06-20-2013).]

Fiero_Fastback_Freak SEP 17, 07:43 PM
I can't seem to find/get to the top bolt on the cover, is there any special way to get to it?