I did a search on testing the TPS. I followed a link that gave this info. "The spec range for Key On is from .88 to 1.0 volt; shoot for the .97 to .99 volt. With the engine running, the voltage should be no higher than 1.05 volts. " with key on/engine off I got a reading of 4.06 volts. If this is right......whats wrong?