I started to experiance a spudder at low RPM's. This was only happening once in awhile. The other night after setting at an idle for approx. 20 minutes, I started to drive off and the car just cut off. It would not start then and I have not been able to get it to start since. I have replaced the Coil, Plugs, Cap, rotor. I sprayed starte fliud and not even a cough. I metered the coil output and the voltage dropped while I would crank the motor over. I have read many of the threads and it seems that I might want to replace the OVP. Any suggestions would be greatly appreciated.

Thanks in advance.