A/C quit working

[Jerome morris]

I was driving my 2013 sonic today my ac would be blowing cold then if I went over train tracks or bumps in the road it would start blowing cool aire and work itself up to cold.could this be signs of a bad relay or blower motor or motor resister.

 

[ozonetrooper]

If the blower motor resistor was bad the blower in the dash would quit working and no air would be coming out of the vents.


Sounds like a loose connection on something.