Just picked up a 2005 GTP for the used car lot I work for and........
Getting P0463 Fuel Level Sensor Circuit High Voltage = ECM, PCM code.
The fuel gauge does its normal start up cycle, then it goes back all the way up to full, stays there for 3-5 seconds and then drops down to empty and stays there. We put in about 7 gallons of fuel and same thing!
I took the car for a drive and under half throttle it runs and performs fine...responsive and drives well. The second you floor it the car falls flat on its face...acts as if it hits a rev limiter even though the RPM's are no where near the red line...just seems the car is starving for fuel or air.
I checked the following:
Gas line PSI is at a solid 60
All plugs read the right voltage
Our scanner shows the cars fuel is at 100% right at start up, then drops down.
The voltage at the pump stays at 14V, does not change at all.
What do you guys think this is from??
