Ask for and share advice on using the PicoScope kit to fix vehicles here.
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I have a clio in thats cutting out.it has fault codes for rail pressure sensor coherence and rail pressure sensor permanent high. There was also the same codes for the inlet manifold but i tested it using a mityvac and scope and it looked good. I was hoping some could take a look at this waveform of the rail pressure sensor and give me an opinion if anything stands out. thanks
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If you have K9K , trouble code DF137 and that waveform in comparison with standart, one of the reasons - wrong pressure regulator.May be there is no correspondence between the control current, and a high pressure .Sometimes it may help flushing and blowing out with compressed air after removing pressure regulator.But sometimes it helps only replace.In any case, you need to compare the current through the solenoid and the corresponding pressure.