Re: weak airflow from heater and A/C
Actually I bought this grand cherokee used and the wiring harness was taped from one end to the other. All it took was to reterminate the end, by taking both spade ends out and switching them around.
I couldn't believe the difference when I fired it back up. You made my day.
Now I just need to research replacing the rear wheel bearings and this machine should be in really good shape!