2012 Nissan Pathfinder 4.0 stalls - Nissan Forum

 
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post #1 of 7 Old May 7th, 2019, 06:11 PM Thread Starter
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2012 Nissan Pathfinder 4.0 stalls

Hello everyone, I have a 2012 Nissan Pathfinder and it will intermittently jerk and stall while driving. I had the codes “read” at Pep Boys and the first time it said it was the mass air flow sensor. I replaced that at it was good for about two months. Recently it happened again and this time it stalled while my wife was driving. Same jerking and then off but when I got to her it fired right up. I drove it across the street to Pep Boys again and this time it said the “engine speed sensor” had a critical failure.
This is my issue..I did not see what the actual code was so I am guessing between two possible sensors. The ones at the wheel hubs or the one at the tranny (leaning towards that one).
Anyone know if I am on the right track and if so where that sensor is located?
Thanks in advance...Ron

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post #2 of 7 Old May 14th, 2019, 08:54 AM Thread Starter
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Does anyone have any ideas?
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post #3 of 7 Old May 14th, 2019, 09:10 AM
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Hi

Not sure if this will help. I recently bought a 2007 R51 which had the habit of stalling unexpectedly....once whilst going around a roundabout with traffic! Not much fun when your vehicle suddenly stops and you lose power steering and brakes!

I narrowed it down to the Crank sensor at the back of the engine near where it joins the gearbox, right hand side as you are driving (driver's side in UK). It was easy to change once the wheel was off and the wheel arch liner was removed. This immediately stopped the stalling.

Also, another former Nissan Recall involved the ECM relay...worth replacing for a few pounds/dollars in case that it causing the same issues?

These are well documented on the internet so could be worth investigating? Feel free to contact me for advice as I have done both jobs.

Not knowing the codes...perhaps the "engine speed sensor" and the Crank Sensor are the same thing in this case??

Best of luck!

Andrew
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post #4 of 7 Old May 14th, 2019, 10:38 AM Thread Starter
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Thanks for the reply!!!
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post #5 of 7 Old May 14th, 2019, 09:22 PM
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I can't see where the wheel speed sensor or the revolution sensor in the transmission can cause a stalling concern. A faulty crank position sensor or cam position sensor (there are two: one on the back of each head) are fairly common failures that cause stalling and/or no starts but they don't always trigger a code. If you replace one or more of them, it's best to stick with genuine Nissan or Hitachi brand sensors, although I have had good luck with Standard Motor Products/Intermotor, which is made in Japan. Many have reported problems with the aftermarket sensors, sometimes being bad right out of the box. Also check for splits in the rubber air ducts that connect the throttle body and the air cleaner to the air intake. They can develop dry rot splits that leak unmetered air into the engine.
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post #6 of 7 Old May 15th, 2019, 11:22 AM Thread Starter
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Tha is for all the replies! I took it to Nissan and they told me it would be $1253 dollars to replace the sensors, clean the throttle body and “reprogram” the ECM. Of course this sounds like the typical screwing from the dealership so I am going to replace them all myself. Thanks for all the help everyone!
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post #7 of 7 Old May 16th, 2019, 05:52 PM Thread Starter
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So I replaced the crankshaft sensor, both cam shaft sensors and cleaned the throttle body and the truck runs perfect! I and even getting 5 mpg better gas mileage! Thanks everyone for the help!!!
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