My dad has a '91 Accord 2.2 that's having a cruise control problem. It won't stay activated or sometimes won't kick in at all. I tested the stoplight switch and it seemed real sensitive when using the tone on my continuity tester so I replaced it but my dad says it hasn't fixed it. I'm not really suspecting the steering wheel set switch since its a momentary type switch and does cause the dash light to come on every time its depressed (just doesn't always stay lit). The main power switch always seems to work although the light on the button doesn't light up. I haven't taken anything apart to inspect/clean yet. I'm suspecting the servo is probably the problem but have no idea how to test it. Then there is the clock spring and connectors and the speed tie into the computer and so on. I don't really know where to star.

Anyone know of any common problems in this system on an Accord? Vacuum lines are good and when I remove the main line after it has been sitting not running it releases its vacuum so there is no leak there.