Fixed it for you, added s It wasn't my fault. My computer failed to inform me of this technicality. I will get my IT people right on it.
I'm impressed, your diagnostic/mechanical skills are far better than most of my gender(male).Place back pedaling icon here. I'm sorry about Ohio, but I'm loving the open windows and soft warm breezes. Gotta brag now, in August. Keep us informed.

 

@ BW56 not biggie... I was blessed with small hands so my dad had me working on cars at a young age.. I hope you aren't paying your IT people overtime.. LOL..

The cavalier is fixed!! So a simple back flush and telling the husband he didn't back flush it right.. As soon as I put the water hose (1st I put CLR in for about 20-30 minutes) on the hose by the t-stat (right of t-stat) all this rust and calcium peddles came out or the other side.. I used the hose by the t-stat and the one setting by the battery coming off the other line to the heater core..I wouldn't of never think the heater core would cause my issue but indeed it was.. so lesson learned..

 

And another happy customer Glad we were able to help. It didn't make sense to me when i had this problem either. Its an interesting design to say the least. Congrats on a "cool" running car. Bob