Just when I think my '97 GP with 155K is running well, something else pops up. Recently, I started hearing a loud chirping noise coming from the engine compartment that sounds like a bird we have in this area. The noise is not regular and is not RPM related. Sometimes the sound occurs about every 2 seconds, other times it chirps 3 times in a row, and sometimes it doesn't happen at all. It's driving me crazy and starting me thinking I should get another engine or just scrap the car. It still runs like new if I ignore the noise. Does anyone have any idea what this might be?