I doubt a diagnostic hookup will pinpoint the problem. I am suprised that at Midas when you probably told them the problem was the chirping noise, which sounds like a bearing going out, did not note that the work they did was not successful in resolving the problem.
I offer the following suggestions and this is assuming that the noise is always there:
You can remove the serpintine belt and start the car. Note if the sound has dissappeared. Now you have nailed it down to A/C, alternator, or power steering. With the belt still off try turning the pulleys by hand. Note if one of them seems to be a little tight and possibly has a little bit of drag to it. You might even hear a slight noise as you turn the pulley.
If one clearly indicates it is the problem, replace the device, otherwise, reconnect the belt and drive the car. Keep your eyes and ears open for any increase in sounds or other problems. The problem will probably esculate slowly until the chirper is found.
I hope this helps. Lived in Des Moines for a couple of years, some very nice people. Worked at Iowa Methodist Medical Center and the Blank Hospital.
Thursday, December 14th, 2006 AT 1:06 PM