My beloved 1997 Ford Aspire looks great and runs great except for when I turn on the air-con. It starts to vibrate as soon as I turn it on. Vibration stops when accelerating but starts again when stopped at a light. One mechanic said it's the "idle engine", which is not made for this car any longer. Another said he could modify so it works correctly and another said it would be best to change the engine. Several have looked but so far no solution. I'm certainly not going to change the engine. So, I need a mechanic who knows old Fords. I won't be going to Pro Auto or to Jimmy on the Ring Road. I've been here for more than 17 years, seen a lot of shops and am not looking to go broke with those guys. Any other suggestions are welcome.