Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hey there thanks for the question.
Do you know exactly what fault codes are present? or just the lights?
Hey there, sorry for the delay.
Thanks for the additional info, unfortunately the Throttle fault doesn't sound like its related to your issues. Sounds to me like the ABS system is initiating the throttle restriction and it's also throwing that code as well. Most throttle issues also include idling problems and are more consistent and not intermittent.
The fact that you get a 4wd indicator the same time you experience throttle restrictions leads me to believe there is an ABS fault of some sort. When the control systems detect a slip condition it will restrict throttle and disable the 4WD system which will cause the display to turn off.
Do you know anyone with a scan tool that can watch wheel speeds and connect with the ABS module to see if the transfer control unit or ABS unit is getting any faults?
Any burning smell under the bonnet would certainly be a concern and the fact that it won't start again until it cools indicates we like have a sensor being effected by the engine temperature that loses it's reference until the engine cools.
That being the case it would more that likely be related to one of the sensors that control fuel or glow plug operation. (Crank sensor, SCV, rail pressure sensor etc)
The easiest way to go about finding out which one is at fault would be to first determine when it won't start if it's because of fuel or ignition, this would require checking for power and a ground pulse when cranking.
Correct, I never mentioned a hot engine in my response.
Simply that a sensor pickup is being distorted effecting the fuel / spark circuit until the engine cools. Not entirely uncommon by any means when it comes to crank and cam reference signals.
Yes, exactly and since your not getting any direct fault codes relating to your issue. You really need a way to view live data on a scan tool so you can see the duty cycle on the SCV and scope the phas and pos readings.
Those 3 sensors are known to cause 4wd issues, including intermittent 4WD operation, but will NEVER cause a no-start condition.
Could be related to the transfer case sensors, but until we fix the no start and loss of power issues it's not going to matter much.
These sensors had known issues, ideally you want to pull codes though before just swapping sensors. And check the dust boot where the prop shaft enters the transfer case. They allow water intrustion and thats what eventualy shorts the sensors.
Your not alone there, after re-reading our correspondence somethings just don't really make sense here.
Unfortunately I am not at the vehicle and can only go off your description of symptoms.
While the majority of the symptoms here could result from an ABS fault, causing the 4wd to be disabled and the throttle to be restricted, the part that doesn't add up is that the vehicle will not restart. That is the main symptom that doesn't add up to the others.