I have coolant/radiator fluid in the floor on the passenger side. I doesn't leak all the time, but then I haven't driven it much since it happened. I have heard it is the hearter core, and that makes sense since it doesn't cool or heat well now. Takes forever to just get warm. What do you think?????

definitely your heater core.......

Yea, everyone says so. Is this a hard repair? Also, I wonder if I could flush or put some stop leak type of fluid for heating systems in there for a fix................thanks for the info

what vehicle is it?

chief, 2.5 litre

cherokee? do you have a shop manual? heater cores are only about 45 bucks....

Not for this puppy, I have two prices; 180 and 290. I don't have a shop manual and am going to buy a book at an automotive shop today

if its a cherokee, you can download a really dank manual...

must be dealer only on your heater core.... my 94 is only 42.00.. but they are not too horrible to change.

http://www.lunghd.com/Downloads_and_Links/Downloads.htm

the 2000 manual should help you with the 1999.

I didn't think the chief was available in '99, are you sure it isn't an '89?

i didn't think the old cherokee chief had 4 bangers???

nope, '99 4 banger