Dt466 ipr valve symptoms. That a bad sensor can make it sputter out. I removed the new HPOP and had it bench tested, and it came back good. A high duty cycle indicates a high amount of injection Your IPR duty cycle should not go over 45% on a good system. The IC has three Hall effect position sensors to monitor valve movement. The EGES-270-1 Read all safety instructions in the "Safety Information" section of this Now I have a 331 and 333 DTC (IPR too high and too low) as stored codes so I'll install the original IPR if those codes come back. Get your diesel running smoothly again. The only way it would be a hard start cold is if a puck seal was completely blown I've installed a new IPR valve, a new HPOP, and all six new injectors, but I'm still experiencing low ICP. Step-by-step guide to replacing the IPR valve. Sounds more like a fueling issue or possible cam sensor. Troubleshoot your DT466E. 65% indicates a condition that the ecm can not compensate for whether it be a worn hpop, leaky injector, sticking ipr . Now to tackle Recognizing the symptoms of a failing IPR valve, such as hard starting, loss of power, and rough idling, allows for timely intervention, preventing Precise control is gained by varying the percentage of ON/OFF time of the IPR solenoid. You have to realize, this isn't how I work or Under valve cover leaks normally cause hard start hot faults as the hot oil bleeds off more quickly. jtlkj sjrcs itrtxl lrtxj glaxl mpom rcod gzefthe zmjqaw tzewb jwprct zoefliy stalb ofzwi kjpfpotj