'94 grand am gt won't heat up and all around sucks

[bremen242]

I'll have to check. Can I swap the old valve directly with the new, or do I have to get a new waterneck? which years have the new one anyways?

I put on acdelco wires and the car runs noticeably better; however, when the SES light comes on, the temp drops, so I'm thinking the car is going into open loop when the EGR fails. openloop=more gas=colder engine. So, I am going to screw with that today.