The FICM is mounted on supporting brackets above the valve cover on the driver’s side of the engine and was used on the 6.0 Power Stroke engines. I also noticed that after my 1hr commute, i reach back and touch the fuel pump control module under the rear seats, it feels hot. A 6.0 FICM or fuel injection control module is what provides power and control to the fuel injectors. I can still gain acceleration if i hit the gas so im thinking its not the HPFP.
It seems to be more of Low Pressure Fuel Pump issue or Fuel Pump Control Module. Using accelerator pedal position information and fuel rail pressure/temperature inputs, the PCM can direct the fuel pump driver module to regulate fuel pump speed to match engine needs.
I also stopped to refuel my tank since i was running low (15miles left).Ĭan anyone suggest what the cause of this issue might be? i did some research and i think it might have to do with the fuel pump. The fuel system control strategy is a software program stored in the PCM. I was able to successfully drive it all the way home (25 miles 1hr travel time). After trying to call a tow truck for 15 mins i decided to give it another go and the car started up this time. Once on the side of the road i tried to restart the car but the car would just keep cranking. Larger vehicles such as a Chevy Silverado and its 6.6L Duramax engine will have more noticeable effects than something like a 4-cylinder Toyota Corolla engine.Today i was driving up hill and as i was accelerating i noticed after 3k rpms it seemed as if my car went limp, i pressed the gas pedal and there was no response so i pulled over to the side of the road. Most of the time, too much fuel will be pumped into the combustion chamber and there will be a noticeable reduction in your MPG from running too rich. With a bad fuel pressure sensor, the engine will not receive the correct amount of fuel for its internal combustion process. The PMD ( pump mounted driver ) module GM part 12562823 GM sells just the PMD for 519.28 or more, but we offer the PMD module for ONLY 349.00, the Fuel Calibration Resistor is 32.95 extra. If you previously had trouble starting your car but then got the engine to finally run, you may experience stalling as you’re driving later on.īut even if it is the first time the car has stalled, it could still be due to a faulty fuel pressure sensor. Difficulty in starting or a smoky start-up, stalling or uneven running while idling, hesitations and misses when driving, and power surges when in reverse can all - separately or together - be indicative of a failing module. Sometimes you might get a not-so-nice surprise and have your vehicle stall as you’re driving it. Symptoms of a failing fuel-pump driver module all manifest in the performance of the engine.
But eventually, it may get to the point when it doesn’t start at all. If you try to start your vehicle’s engine and it doesn’t start on the first attempt, then your fuel pressure sensor may not sending a good signal to the engine’s computer.Īt first, the engine will eventually start after cranking a few times. This will cause a noticeable loss of power from your vehicle as you’re driving. If the sensor is bad, then it will interfere with the air and fuel ratio. If you step on the gas pedal and notice a lack of acceleration, then it could be due to the fuel pressure sensor. Of course, there are a large number of other reasons for why the check engine light would turn on besides having a bad fuel pressure sensor.
We were able to drive slowly for short distances this way but it was seriously not right. Any attempt to accelerate at all caused bucking in a rhythmic sort of cyclic pattern of power then dead then power then dead, etc. Then it will activate the check engine light to let you know there is some kind of problem that is related to the engine. It suddenly started bucking, mildly at first but quickly developed into a severe, Ill call it rhythmic, bucking. Sometimes the engine control unit will sense a problem with the signal from the fuel rail sensor. If you see the engine warning light illuminate on your dashboard, then it could be a sign that your fuel pressure sensor is bad. Below are the top 5 symptoms for you to watch out for in case the fuel pressure sensor of your vehicle goes bad. If there is something wrong with your fuel pressure sensor, then there are some easily recognizable symptoms that will become apparent to you.