AC makes a vibrating horn sound while car is idling
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Lucky001
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AC makes a vibrating horn sound while car is idling
Replaced the expansion valve, dryer and evacuated the system. Cools and operates great until the car is idling and it makes a noise like a fog horn. While this is happening the expansion valve and dryer are both vibrating at a high frequency. Mechanic replaced both parts again under warranty and it still does it?????
Re: AC makes a vibrating horn sound while car is idling
On your 1987 Corolla FX16 with dealer installed A/C it is possible to put the dryer in backwards.