I have a 2001 Chrysler town and country LXI with a 3.8l engine. I replaced my radiator cooling fans and cooling fan module. I get heat in the front of my van. The back heater core fan blows cold air. I replaced my rear heater core. What can I do?

 

are the pipes to the back of the van hot to the touch?

 

The lines going to the rear heater core I replaced were warm to the touch. Also can you tell me what OEM shocks I can use in the rear of my van. I replaced the old heavy duty ones with a pair of shocks that cause my town and country to bounce in the rear when I go over a speed bump