gofastman

Hey guru's I had a no start problem with my 03... done all the obvious things fuel filter first and so on..... now i changed out my cp3 with a pump off an 04 truck...the motor date is 05/04....so first question is does this make this an 04 motor or a 04.5 motor.

Now put it on truck and she fired right up and runs great just like always....BUT...i have a code set of p0193....high fuel pressure....is this caused by the new pump being off a 325 motor and the ecm is seeing higher than what is programmed for? or do i have another problem.
I have rechecked everything fuel return lines and return flow rates, all seem to be very good.

Need some help please.
thanks

BigIron70

P0193 is not high fuel pressure. Code is for high volts at fuel pressure sensor. Did you have the sensor unplugged with key on? Is code stored or active?


P0193-FUEL PRESSURE SENSOR VOLTAGE TOO HIGH
POSSIBLE CAUSES
OTHER DTC’S
FUEL PRESSURE SENSOR
SIGNAL CIRCUIT SHORTED TO VOLTAGE
SUPPLY CIRCUIT SHORTED TO VOLTAGE
SIGNAL CIRCUIT SHORTED TO SUPPLY CIRCUIT
RETURN CIRCUIT OPEN
ECM
INTERMITTENT CONDITION

BigIron70

Measure the voltage between the supply and return circuits of the Fuel pressure
sensor harness connector.
Is the voltage between 4.5 and 5.5 volts?
If yes then connect a jumper wire between the signal circuit of the
sensor connector and the return circuit of the sensor connector.
Does DTC P0192 set? if yes then replace sensor.

gofastman

Big Iron I had the edge box on it until i changed the pump. i removed it. but the code is still there with the cel on. i was thinking that was the cause of the problem but the cel is still on. thats why the big question on the pump from other motor

gofastman

The only other code i have is p0514
The battery test in the excellent range, so i figure a bad sensor for that

BigIron70

p0514 if both battery check ok and connections are clean and tight then TSB may apply

gofastman

what tsb, can you help me

gofastman

Thanks for your help