imp
Explorer Addict
- Joined
- November 12, 2009
- Messages
- 4,798
- Reaction score
- 779
- Year, Model & Trim Level
- 59 Ranchero F250 D'Line
2004 Explorer 4.0L. 2 years ago, I got a P0193 code, "Fuel Rail Pressure Sensor Circuit High Input". At the time, knowing I have the returnless fuel system, this thing's gotta tell the PCM the fuel pressure, and PCM controls Fuel Pump speed to maintain pressure within tight limits, around 60psi. I figured if that sensor "buys it", the vehicle has no fuel supply.
Anyone know if that's true? I replaced it with a new one from NAPA, CEL gone, ran fine 2 years, now getting same code again. About 20,000 miles. I"ve been erasing the code, it's coming back now sporadically. This morning wife & I left for doctor visit 80 mile round trip, no CEL. I bought another new sensor, but kinda hoped for cooler weather before laying under the hood; it's gettin' kinda hard doing this **** at 71! Plus, it's been 110+` degrees every day for 6 weeks.
I'd feel lots better knowing Ford has programmed in some kind of "limp" strategy for failed fuel pressure sensor, like, it runs pump at some intermittent interval they found could get you by without busting a fuel line from too high pressure, or maybe a pressure relief valve at the pump output which dumped back into tank at maybe 70psi.
Any ideas or definite knowledge of effect of loss of fuel pressure sensor?
Thanks for reading! imp
Anyone know if that's true? I replaced it with a new one from NAPA, CEL gone, ran fine 2 years, now getting same code again. About 20,000 miles. I"ve been erasing the code, it's coming back now sporadically. This morning wife & I left for doctor visit 80 mile round trip, no CEL. I bought another new sensor, but kinda hoped for cooler weather before laying under the hood; it's gettin' kinda hard doing this **** at 71! Plus, it's been 110+` degrees every day for 6 weeks.
I'd feel lots better knowing Ford has programmed in some kind of "limp" strategy for failed fuel pressure sensor, like, it runs pump at some intermittent interval they found could get you by without busting a fuel line from too high pressure, or maybe a pressure relief valve at the pump output which dumped back into tank at maybe 70psi.
Any ideas or definite knowledge of effect of loss of fuel pressure sensor?
Thanks for reading! imp