Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome to just answer. This "horn" noise is most likely related to something Vibrating in the HVAC (heater/ac system). I say that because of the fact that you can make the noise happen when stopped and turning on the blower. Inspect the fresh air intake for the HVAC system under the cowl passenger side. Maybe remove the blower motor and see if there is something in there like a piece of paper, or ?? Check those things and let me know what you find if anything.
I hope this helps,
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