1999 Lincoln Town Car wipers, windshield & visibility problems

Tl* the contact owns a 1999 lincoln town car. While driving at an unknown speed, smoke emitted from the air vents and caused the vehicle to overheat. The coolant also drained onto the floor of the vehicle. The dealer stated that the heater core failed. The vehicle was repaired, but the failure recurred five times. The manufacturer was notified. The approximate failure mileage was 105,824.

Car has a problen in the steering box. Took it to a specialist and ford discounted it. They sent a lincoln rep down and he just lied to me about the problem said it was a factory flaw and could not fix , then I took the car into the dealer for a pinging and they said they couldn't hear it (nothing was done)then later on a trip it went haywire sounded like a big diesel truck on the highway and ran like crap , sucking gas also, then changed dealers and they said they coulden't find a ping .