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Thanks guys for your replies. The dealer said they could do nothing as the sound is intermittent. They said just watch and listen for a pattern. I can live with it if the car is just cooling off. The fan does not turn on like my Honda I sold and replaced it with the MP5. Tinging sound is...

Thanks Linuxracr. But.... i've never heard of an airconditioner (compressor?) decompressing. I thought vehicle A/C systems are considered "closed" systems? By the way, I called the dealer and they never heard of a Protege5 making bzz bzz sounds from the engine compartment. I told them the...

Thanks fastdrvr23. I thought catalytic convertors make a crackling sound when cooling? My sound is more like a bzzz bzzz sound. It surely sounds somewhat electrical to me. I'll check again for a raspy type sound. Do you geta sound from your catalytic convertor? Greg

I've had my Protege 5 for around six months now. I just noticed that I'm getting a strange electrical buzzing/relay type sound coming from the front end of my car when the car is off. I notice it after I drive and go to the front of the car. It doesn't happen all the time. The car is off...