Im in the process of changing my heater core and i was wondering what is in the black plastic box next to the heater core box?

Aslo if the circle at the top of the floorboard is leaking coolant what could that be?
http://i31.photobucket.com/albums/c353/furyus67/HPIM0844.jpg>

Last question, the picture with the circle and arrow in it...that is under the hood on the firewall, that little circle leaks coolant, do you know what that could be?
http://i31.photobucket.com/albums/c353/furyus67/HPIM0848.jpg



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blower housing?

The part you have circled is the a/c condensate drain.

how would i go about fixing that?

Fixing it? How do you mean? It's purpose in life is to let the condesation from the air conditioning system drain. When the heater core goes bad, it leaks from the same place.

oh ok, so if that is leaking coolant then it would be the heater core to replace right?

correct

alright thanks, just makin sure im on the right track

I see you're from Crofton. Your s/n seem familiar. You on any local forums?

These may help you
http://www.mustangmonthly.com/howto/mump_0606_ford_mustang_heater_core_replacement/index.html

http://www.mustangmonthly.com/howto/5769/index.html

that picture in your sig looks familiar, looks like capitol raceway to me! i have got a couple that lookjust like it. maroon 89lx is my uncle (9.60s all day long) calipso green 92lx is my good friendWill(10.10-10.20's) and my 86 black conv.

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local://upfiles/96633/B4A307E350B649A39B8989D63C476A03.jpg

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ORIGINAL: BlackBetty93GT

alright thanks, just makin sure im on the right track

yup heater core!!![:@]