The coolant issue was a head gasket problem on the 3.8L engine. No coolant flows thru or around the intake manifold. Could be intake gasket issue or just needs a new set of plugs/wires. And if you're keeping it for some time, I'd spend the additional $70-75 for a new coil to go with the plugs and wires.
"Have a good day, and a better one tomorrow"