Being kinda new to the Fiero world, I did not want to attempt this repair myself. Other vehicles that I have done this on were a huge pain in the ***. After reading this write-up, I thought I would give it a try. Finished the job within an hour. Thanks for the great how-to

Pulled mine in about 20 min. Waiting for the new one to finish the job.

Great write up. I just finished this in about an hour from first screw removal to the topping off of coolant. This thread helped make that possible, because I knew what to expect going in. Its the simplest heater core job I have ever done.

Jim

Replaced my heater core last night.
88 A/C..
I replaced it with the a "Spectra" aluminum heater core from "Autozone"//
I didn't remove the speaker.
Upon installing the aftermarket unit I had to remove the original tension bracket that is screwed onto the cover heater core cover..
Heater core cover wouldn't seal with bracket in place.
Other than that it was quite a simple R-R..

I am getting ready to do this swap out. PO bypassed the original core. The two houses have been tied together by a plastic sleeve. Which of those hoses go to the top side (heater in) of the core, and which is the return side?

quote Originally posted by rice.1: Which of those hoses go to the top side (heater in) of the core, and which is the return side?

The hoses are two different sizes, as are the inlet/outlet pipes on the heater core. Match 'em up.

Just noticed the pictures waynrayn posted on the first page are not showing up any more. Here they are uploaded to PIP:

Under dash, showing a non-AC heater core box. Note the blue clips on the vent cable.



Aftermarket AC system installed in a non-AC Fiero



Aftermarket AC system with the panel opened to remove the heater core

[This message has been edited by RWDPLZ (edited 07-28-2015).]

Thanks for the writeup RWDPLZ, this will really help. Last time I had to do one was back in '91... it's time again!