wanted to replace heater core finally got it in and now i have no air and aloud hissing noise
i think i need to bring it to a dealer ship

 

Does the ac/ heat **** work?
check all the vacuum hoses one of the many may be disconnected

 

black hose was disconnected now i have whistling noise coming from the "air box" is that normal ? seems like i wont hear it when the dash is back on checking hoses again any other ideas

 

Ok, thanks for responding.:cool
Now does the ac/heat **** work?
If so you should be ok. The air should work,but what I did when I had the same problem was turn the car on and disconnect a vac hose under the hood on to the firewall to the right of the TB . Now the whistling noise you have can be either a crack in the box that the core is in or just the air flowing through the box.
AS long as thed vheat and ac works your good.
BTW is your heater core connected to the Ac?

 

I replaced mine like 2 weeks ago. When I put it back together it wounded like I had a hurricane moving through the car. I noticed that I did not seal up a crack that was along the blower motor housing part and it was sucking air really fast. I sealed it with epoxy and now it is fine.

If you took yours out better than me it might not be this problem. I broke my box in many places upon removal. I needed 2 tubes of epoxy to fix all my breaks and cracks. It was that bad haha.

 

ya every thing works now i have check engine light any ideas?

 

prob another vac leak somewhere since you seem to have had a problem with that

 

ooooops was evap hose