2004 Dodge Neon 4 cyl Front Wheel Drive Automatic 102000 miles
I just had a heater core put in, into my 2004 Dodge Neon SXT 2.0l. Now there is a hissing noise, almost sounds like air coming from a tire coming through my vents, when I hit the gas it goes away. And also when driving on the freeway and the air is not on it still feels like the ac or heat is on cause its coming through the vents on like a low setting, but nothing is on. What could cause these problems?