Oldmanz350 Posted August 7, 2021 Report Share Posted August 7, 2021 Hello, 350Z PnP VVT intermitent "missing pulse" "BANK 1" Lockouts in VVT are 1200rpm & 122 degrees ECT I've done a complete cam calibration. 1. Start the motor cold, warms up passed 122*, I increase RPM to 1500, 2000, everything is fine, No error. 2. 2-3 minutes later, ECT is at 185-188*, increase RPM to 1500, 2000, 2500. Give it a few small revs, everything is fine, no Error. 3. I continue doing the same for just 3-4 minutes more, and then the "missing Pulse" Errors start adding up, but it's intermitent! 4. At this point, if I give it a small rev, I'll get a single error on throttle, then again a single error off throttle. 5. At some areas of the RPM, steady throttle I have a Signal & No Error, and at other RPM's No Signal & "missing Pulse Error. 6. I've checked the Cam Control Solenoid, 7.8 ohms @ 75*, 9.3ohms @ 140*+, hooked to 12v power, Valve operates, movement is maybe .060"-.070" Inch 7. I've checked the Connector, has 1.57 Volts Questions: Bad Cam Control Solenoid? Bad Cam Angle Sensor? Bad ECU, Link G4X? Thank You, Tim Hampton Quote Link to comment Share on other sites More sharing options...
Adamw Posted August 7, 2021 Report Share Posted August 7, 2021 It can only be related to the signal from the cam positon sensor. Do a few trigger scope captures next time it is doing it. You could possibly switch the cam sensor side to side to see if the error moves with it. Quote Link to comment Share on other sites More sharing options...
Oldmanz350 Posted August 7, 2021 Author Report Share Posted August 7, 2021 Yea, Already Fix it. it was The "Cam Position Sensor". Thanks Adam, Tim Quote Link to comment Share on other sites More sharing options...
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