Cooling Problems 2001 sunfire 2.2

I just replaced my heater core. Took quiet some time before I got heat to blow and now its running hot. Fluid may be a lil low due to burping but I dont feel its to low. While I let it cool off I thought I would ask for a lil help. If by chance I swapped the hoses on the firewall would that cause it to over heat?

:banghead:

shouldn't.. its still making the correct loop but backwards.

When you refill the system, leave the coolant cap off so the system can't pressurize. This will get all the air out of the system.

Thats what I thought....After letting it cool down I checked and it was a Whee bit lower than I thought. Thanx For your help