MATT, I'm the guy superairdawg mentioned that had the same/similar problem. First, I'd email Perfect Pass to make them aware of the problem and get it on record. They are great to work with. Second, here's what they told me... 1) "Try unplugging your RPM Sensor from the Perfect Pass Master Module. The Master Module should be located under the dash and all the inputs are labeled." 2) "Leave it out for now. What can happen is noise enters the system through one of the inputs and instead of the microprocessor seeing it’s expected input frequency it now sees 10 times that. This overloads the processor and forces it to miss other inputs such as button presses. Of course when the problem first starts it will be minor but as the noise levels increase the processor keeps getting busier and busier until eventually it ignores all button presses while running. This is basically the symptom you are describing so by unplugging your RPM adapter we should see your system cured of its problem, in which case we will replace the appropriate part. If not we will look at a couple of other things." 3) "The problem could be that the RPM sensor is plugged into the wrong input. It should be plugged into the last plug on the front edge of the Module. The second to last one is the timer port and will also overload the system and cause this problem. Let me know what you find out." I did everything they asked and hooked up all the wires in their correct locations. No problems since. Give them a shout. I see your in the Cincy area. Maybe we had the same installer of the PP system?
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