| Reference sensor??? do not know what it refers to. and ECU if this was shot though, would the car even fire up at all or drive? would these symptoms exist?
>>> i think you mean crankshaft sensor? that is by the flywheel. Or if ur are referring to a signal reference sensor, that would be that funny wire that is connected to your #1 or #6 sparkplug wire.
>>> ECU defect will display many symptoms. partial defect can be just like what your car is displaying right now. the graver ECU malfunction will shut off fuel supply and ignition supply as well; and of course, car won't start.
Diagnostics is a step by step procedure.... beginning from the sensor inputs and working your way upstream. Don't go blaming everything tht comes to mind because when your mind attacks the prob minus the logic, you will get screwed. :-)
Really, i would start by buying a can of carb cleaner brake cleaner($2.50), and spray in and around the afm, rubber boots, ICV, throttle body, and intake manifold... just to make sure there are no intake leaks. any erratic change in idle when u spray definitely means an intake leak. - repair that first.
*btw, your ICV should be humming with ignition ON(it's a DC motor) inside that sucker, and if it isnt humming, then it is dead... or the voltage supply line is dead.
** actually check all ur fuses.... before u start any of what i mentioned above. (it might be jst that) GOOD LUCK!!! | 
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