I just did these too, plus the crank sensor. I don’t think I could have done it if my arms were much shorter and my hands and forearms any bigger. Not very fun, but satisfying knowing that I probably saved almost $500 over paying the dealership or a shop to do it. Show My experience and tips: The crank sensor took more prep work: remove the front passenger tire and wheel liner. The clip connector was a pain, and the access a bit tricky due to various lines in the way, but a small socket wrench with a deep 10 mm socket did the trick. The passenger side camshaft sensor was the worst, as I anticipated from watching a few YouTube videos and reading several How-tos. And I couldn’t skip it because it was the one causing the problems (P0340). Access is a pain with wires and/or hoses in the way from nearly every angle (even moving my catch can out of the way), and there is only a limited amount of space between the block and firewall. I gave up after fighting the connector to the sensor, and the nearby connectors to other things were stuck too. I found that access from the bottom through the wheel well (as some have recommended) was practically impossible because it is a long reach to start with plus it involves going past several exposed screws and a sharp cornered exhaust shield. From the top left (looking towards the back of the engine) you have to navigate several hoses and wires, and it’s similar from the right plus you have to pretty much lay on top of the intake manifold to reach far enough. Attempt #2 this evening took about 15 minutes. After reviewing the videos and other instructions again, to boost my optimism, I decided to try accessing more from the right (looking at the firewall) instead of the left and below and pulling out the screw holding it (small 10 mm socket) in before disconnecting. The key I found was laying on top of the engine and basically doing a wide bear hug across the intake manifold so I could get both hands back there, one from each side. The sensor didn’t want to back out easily, so I pried and popped out the first bit with a small screwdriver. More twisting and tugging got it out completely, and using one hand to push down the clip mechanism and the other to pull, I disconnected it. Reverse order got it installed, replaced the engine cover, and reconnected the battery, started up fine, except for a bit of smoke out the exhaust, probably related to all the jostling I had to do with the catch can dumping some oil back into the manifold. Put the wheel well liner back in, tightened the lug nuts, and I’m hopefully good to go for another 130k miles and 10 years. Joined
Feb 3, 2008 · 7 Posts
Discussion Starter · #1 ·
Feb 3, 2008 I have a 2001 Nissan Xterra 4WD and I am trying to locate the crankshaft position sensor If you can tell me where it is and if it is possible post a picture to show where it is ? Thank You please answer ASAP!!!!!!!
Joined Jul 3, 2007 · 8,542 Posts
I believe it is either blue or white but as to exactly where, I am not sure. I think it is close to the firewall Joined Feb 3, 2008 · 7 Posts
Joined Jul 3, 2007 · 8,542 Posts
The firewall is the wall between the cab and the engine compartment.
 Joined Jul 3, 2007 · 8,542 Posts Joined Aug 28, 2007 · 1,494 Posts
The crankshaft position sensor is on the bellhousing behind the drivers side head. Joined Jul 3, 2007 · 8,542 Posts
k1w1t1m said: The crankshaft position sensor is on the bellhousing behind the drivers side head. And the bellhousing is between the engine and the transmission. P.S.-You the man Tim! Joined Feb 3, 2008 · 7 Posts
Discussion Starter · #8 · Feb 10, 2008 Thanks found the crankshaft you guys helped a lot Joined Jul 3, 2007 · 8,542 Posts
I just realized that those links sent you to nothing but the forum. Sorry Denis! I had 2 specific threads that were exactly what you needed. Joined Feb 3, 2008 · 3,779 Posts
Here is a pic from my '02 ESM.
Joined Apr 7, 2010 · 16 Posts
Best way to replace crank position sensor I have searched through this forum and a lot of you have replaced this sensor, my question is what is the best way to get at the sensor to remove and replace it? I can nsee where it is from underneath the truck, but it seems harder to get at than the number 6 spark plug. Any help would be
appreciated, Matt
Joined Sep 11, 2008 · 8,525 Posts Joined Apr 7, 2010 · 16 Posts
I still have the intermittant misfire problem, and since the sensor is the original to the truck , I figured what could it hurt to replace it since I already bought a new sensor. Joined Sep 11, 2008 · 8,525 Posts
i cant see any possible reason to change that sensor,also its not plug and play friendly there is a good chance you will be towing it to a dealer to finish . Joined Sep 11, 2008 · 8,525 Posts
Here is a pic from my '02 ESM.
read the last line. it has nothing to do with how the engine is running. Joined Apr 7, 2010 · 16 Posts
I appreciate the info, but I would still like to know the best way to get at the sensor to replace it. Thanks. Joined Apr 7, 2010 · 16 Posts
So, can anyone help with the best way to replace this sensor? At this point I have nothing to lose by putting in the new one. Can anyone help on this? Joined Apr 7, 2010 · 16 Posts
Well as an update, I was not sure where to post this reply, either in the first thread I started concerning my code 0300 multiple misfire or continue in this one. I will leave that up to the moderator to leave them or combine them. I did manage to get to the crank pos sensorand replace it, but found it was unplugged the whole time. Now whether or not
someone did this by mistake or on purpose I don't know. When I plugged it in and got the truck running again, it ran worse than before and immediately threw codes for the knock sensor and the crank sensor, but no more 0300 misfire. So after some investigating the harness, it seemed that the two sensors are connnected together, through some ground shielding. So I ordered a Brand new harness from a Nissan dealer, and will be installing it this weekend, hopefully this will cure the problem. I will
post later next week. What are the symptoms of a faulty crankshaft position sensor?Symptoms of a Bad or Failing Crankshaft Position Sensor. Issues Starting the Vehicle.. Intermittent Stalling.. Check Engine Light Comes On.. Uneven Acceleration.. Engine Misfires or Vibrates.. Rough Idle and/or Vibrating Engine.. Reduced Gas Mileage.. Where is my crank position sensor located?The sensor is at either the front or the back of the crankshaft, so it's usually located either on the transmission bellhousing or behind the crankshaft pulley. There should be a small air gap, usually about a millimeter or two, between the sensor and the reluctor.
Can I change my crankshaft position sensor myself?While the crankshaft position sensor is a pretty sophisticated piece of equipment, and you might be intimidated by the idea of replacing it yourself, you probably shouldn't be. With a good set of instructions, the right tools, and some effort, you can replace your crankshaft sensor yourself.
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2010 nissan xterra crankshaft position sensor location
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