Two problems related to defogger have been reported for the 1999 Dodge Intrepid. The most recently reported issues are listed below.
Intermittently heater will malfunction and blowout air.
1999 Dodge Intrepid when temperature is turned up on climate control and defroster is turned on there is a fluttering noise that can be heard from drivers side dash windshield defroster vent. This excessive noise/fluttering noise is often a distraction when driving. Noise is only when temperature is turned up or turned to heat on climate control. Noise chagnes when temperature is adjusted. Noise sounds like broken damper in ventilation hayward auto Chrysler-Jeep dealership states they could not duplicate it. I duplicated the problem for service manager gregory martin. He put a card above it to verify that it was blowing air then stated "that's air blowing through the vent, I don't know what we can do about that". He stated he'd have the technician check it out when they remove the dash assembly off to replace the defective dash midrange speaker. They never did, they never did anything about it. None of the similar Dodge Intrepids I test drove did this.