1. P

    TPS keeps failing

    Chasing down what seems like a gremlin in my WE4. My TPS keeps going failing on me. At this point, I've replaced it 3 times in 2 years. Even put a new Casper's plug on it when I found that the previous owner had wired the black to blue. My IAC is set around 35 and whenever I put a new TPS...
  2. T

    TPS voltage dropping

    I'm using the Fast XFI 2.0 system and recently I've come up with a tps error. The problem is the voltage is dropping off after the engine is started. I can set the tps at .44v with the engine off and the pin out voltage is the same at the ecu. (BUT) the voltage isn't steady, it jumps or hunts up...