I have had a heater core leak for some time now. It's getting to the point where I can no longer drive because the windows are fogging up so bad. The weather is warming up and I don't have time to replace the core right now. I'll save that job for later in the summer. Right now I just want to bypass the hoses that go the heater core. Where are the hoses that I have to bypass located?

Front compartment, far right passenger's side, next to the firewall. The windshild washer reservoir may hinder your work-just remove it, take the 2 hoses off the heater core pipes coming out of the firewall and put a short pipe nipple between the 2 hoses with hose clamps. Do not plug the hoses off, just hook the 2 of them together.

These two hoses are different sizes and I think they are 1/2 inch and 5/8 inch. Go to AutoZone and they have a pvc fitting for this purpose. 1/2 on one side and 5/8 on the other side.
Don

Hi, Welcome to the Forum, just a note the hose are sometimes tough to get off--take a razor blade and run a small slit in the hose around the nipple & peel away, also put something down on pass-side floor in case of leaking coolant......

Thanks for the advice guys. I'm off to do it right now.

Keep in mind that by the time you get the hoses off the heater core to do the bypass, you're already 75% of the way through getting the actual core itself out. https://www.fiero.nl/forum/Forum2/HTML/043997.html

JazzMan

quote Originally posted by ka4nkf: Go to AutoZone and they have a pvc fitting for this purpose. Don

i actually just cut off a section of the piping from the old heater core, and used that to bypass the two lines.. i dont remember the two pipes being different sizes.. id get a pic if i wasnt so lazy.

quote Originally posted by rmphoto: i actually just cut off a section of the piping from the old heater core, and used that to bypass the two lines.. i dont remember the two pipes being different sizes.. id get a pic if i wasnt so lazy.

They are two sizes for sure.
Don