Question about 2003 Nissan Altima

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Removing the crankshaft sensor

How do you remove the green piece from the sensor? I have been trying for an hour! Do you pull it off or try to push it? Please let me know...ASAP. Thanks

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Better if you leave the connection on the sensor. Easier to pull out once you loosen the bolt to remove the sensor. Just disconnect the negative cable on the battery first. Install in reverse order.

Posted on May 06, 2009

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You push the green piece in to remove the connector. It is not easy. It has been known to remove thumb nails, be careful. Why are you removing the connector? There is a recall on the sensor.

Posted on Nov 26, 2008

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99 stratus 2.5 v-6/no spark.will crank over.


CRANKSHAFT POSITION SENSOR - 2.5L

REMOVAL
  1. Remove speed control servo from driver's side strut tower.
  2. Remove crankshaft position sensor retaining bolt Crankshaft Position Sensor
  3. Pull crankshaft position sensor straight up out of the transaxle housing.
  4. (Disconnect crankshaft position sensor electrical connector from the wiring harness connector.
INSTALLATION - ADJUSTABLE All vehicles will be equipped with an adjustable crankshaft position sensor. This can be identified by an elongated mounting hole in the sensor.
NOTE: If the removed sensor is to be reinstalled, clean off the old spacer on the sensor face. A NEW SPACER must be attached to the sensor face before installation. If the sensor is being replaced, confirm that the paper spacer is attached to the face of the new sensor Crankshaft Position Sensor and Spacer
  1. Install sensor in transaxle and push sensor down until contact is made with the drive plate. While holding the sensor in this position, install and tighten the retaining bolt to 12 N·m (105 in. lbs.) torque.
  2. Connect crankshaft position sensor electrical connector to the wiring harness connector.
  3. Attach connector to heater tube bracket.
  4. Install speed control servo. Tighten nuts to 9 N·m (80 in. lbs.) torque.

May 19, 2012 | 1999 Dodge Stratus

2 Answers

I need to put a crankshaft sensor but I don't Know its location I already changed the cam sensor. Ronnie


The crank sensor is located on the engine near the flywheel axis of the crankshaft.

Crankshaft Position Sensor Removal & Installation To Remove:
Location of the crankshaft position sensor on the 2.4L engine 90904g51.gif
Location of the crankshaft position sensor on the 3.0L engine 91154g20.gif
Location of the crankshaft position sensor on the 3.3L and 3.8L engines 91154g21.gif
NOTE: On the 2.4L engine, the crankshaft position sensor is mounted to the engine block behind the alternator, just above the oil filter. On the 3.0L, 3.3L and 3.8L engines, the crankshaft position sensor is mounted on the transaxle housing, above the vehicle speed sensor.
  1. Disconnect the negative battery cable.
  2. Raise and safely support the vehicle.
  3. Disconnect the crankshaft position sensor electrical connector.
  4. Unfasten the sensor mounting screw, then remove the sensor from the vehicle by pulling it straight out.
To Install:
NOTE: If the sensor removed is going to be re-installed, clean off the old spacer on the sensor face. A new spacer must be attached to the sensor face before installation. If the sensor is being replaced, be sure that a paper spacer is attached to the sensor face.
  1. Install sensor and push the sensor in until contact is made. While holding the sensor in this position, install and tighten the mounting bolt to 105 in. lbs. (12 Nm).
  2. Connect the crankshaft position sensor electrical connector.
  3. Lower the vehicle.
  4. Connect the negative battery cable.
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Jul 31, 2010 | 1996 Plymouth Grand Voyager

1 Answer

2001 mitsubishi mirage engine will crank but it wont start. Was told to change the crankshaft position sensor. Would like to know how


I have changed the crankshaft position sensor a few times and I tell you it is no easy task. It requires almost damn near pulling the motor out of the car. The sensor is located under the timing belt behind the underdrive pulley. This will require you to pull everything off the car on that side of the motor including the motor mount so have a jack with a piece of wood ready to support the motor.(First take off your battery cables) Once you remove all components the remove the timing cover, loosen the timing tension pully (be careful of the spring) try not to remove the timing belt or be ready to re-time it. you will see the crankshaft sensor down at the bottom behind the underdrive pulley. Its just two 10mm bolts that are not very easy to remove (be prepared to drop one and retrieve it). Unscrew the bolts and re-assemble everything (the hardest thing for me was tightining the timing pulley) This is the easiest way to do it short of pulling the motor completely out and removing the underdrive pulley which would require re-timing and special tools. I hope this helps.

Jun 13, 2010 | 2001 Mitsubishi Mirage

1 Answer

Crankshaft sensor location on 2001 oldsmobile


. Its above the starter going into the side of the block. (front side of the engine) Disconnect the battery. Remove the starter. Remove the wIre CONNECTOR plug to the sensor. The sensor has 1 bolt holding it in. Remove the bolt, you may have to wiggle the sensor at the base a bit as you pull it out. Replace, and make sure it is pushed in all of the way. Replace the bolt, wire plug, starter, reconnect the battery.

Jun 05, 2010 | 2001 Oldsmobile Intrigue

1 Answer

Where is the crankshaft sensor on a v6 2000 chrystler sebring


CRANKSHAFT POSITION SENSOR - 2.5L
REMOVAL
Remove speed control servo from driver's side strut tower.
Remove crankshaft position sensor retaining bolt Crankshaft Position Sensor
Pull crankshaft position sensor straight up out of the transaxle housing.
(Disconnect crankshaft position sensor electrical connector from the wiring harness connector.
INSTALLATION - ADJUSTABLE
All vehicles will be equipped with an adjustable crankshaft position sensor. This can be identified by an elongated mounting hole in the sensor.

NOTE: If the removed sensor is to be reinstalled, clean off the old spacer on the sensor face. A NEW SPACER must be attached to the sensor face before installation. If the sensor is being replaced, confirm that the paper spacer is attached to the face of the new sensor Crankshaft Position Sensor and Spacer

Install sensor in transaxle and push sensor down until contact is made with the drive plate. While holding the sensor in this position, install and tighten the retaining bolt to 12 N·m (105 in. lbs.) torque.
Connect crankshaft position sensor electrical connector to the wiring harness connector.
Attach connector to heater tube bracket.
Install speed control servo. Tighten nuts to 9 N·m (80 in. lbs.) torque.

May 22, 2010 | 1998 Chrysler Sebring

1 Answer

How to replace the crankshaft sensor on 2003 Nissan Altima


The cam sensor is mounted in top of the engine on the right side of the engine where the tranny mounts. You have to remove the top cover of the engine to get to it. Remove the electrical connector from the sensor, there is a clip that holds the connector in place. Push down on the back of it and then pull back at the same time. Pull on the connector and not the wires, they are very small and will break. Remove the bolt holding the sensor. To remove the sensor by twisting and pull on it at the same time. Is the engine not running, why are you replacing the cam sensor?

Aug 06, 2009 | 2003 Nissan Altima

1 Answer

How to put on


Don't bother replacing the sensor. 
There is a voluntary recall for the 2003 Nissan Altima that was issued on 8/26/06. This recall is to address the issue of the crankshaft position sensor placement in the engine. The location of the sensor allows the sensor to overheat interupting the signal to the ECM. 
The interruption causes the car to stall instantlyand the check engin light will come on. The code returned for the check engine light will read for the crankshaft position sensor. Even if you change the sensor the new one will be affected by the temperature after a short while causing the same problem. 
The recall will reprogram your ECM to ignore the input for the sensors (there are two on the crankshaft) and should take the dealer approximately 30 minutes to do depending on their schedule. 
Expect engine efficency to drop after reprograming, after reprograming my gas milage decreased by 4 MPG. Please note that Nissan does not consider this problem to be hazardous so you must voluntarily contact the dealer to have the service performed. 
Good luck and hope this helps. If your going to try to change it. 

Remove the (4) allen head bolts that hold the plastic engine cover remove the bellows fron the throttle chamber to air filter pull off the valve cover breather tube with the bellows. reach over to the brake booster vacuum hose and turn the spring hose clamp about 45 degrees counter clockwise. 
This will keep the clamp from cutting your elbow during the sensor removal process. Now place a drop light under the two rubber brake hoses shining foward. Between the valve cover and the throttle chamber look straight down toward the ground see a plug and black sensor held to the engine block with a goldcolored 10mm hex headed bolt?
 That is ths ****** that has leaked oil into the plug and has caused the P0335 code. Getting it unplugged and removed is the hard step. It takes gorrillia fingers to push in the green release then pull on the wires to remove the plug. 
Next is 2 /2" 1/4" drive extensions and a 10mm socket and ratchet handle. take the bolt out use a pr. of 6" regular slip jaw pliers and twist and pull the 1 1/2 inch long crank sensro rearward. 
The replacement will be made of metal and 180 degrees backward after washing the plug out with spray brake cleaner blow out with compressed air to get rid of the oil. plug the metal sensor to the wire watch the green thing pop back and place the sensor back into its hole. bolt it in place good luck. 
Customer pay retail price is around 170 dollars at the Nissan Dealer. 

May 03, 2009 | 2005 Nissan Altima

1 Answer

Removal of crankshaft posiution indicator


the oil pan has to be removed and the sensor pushed out from inside :-@

Jan 08, 2009 | 1992 Oldsmobile Cutlass Supreme

5 Answers

2004 Nissan altima 2.5 liter Crankshaft Position Sensor


Yes, the sensor can be replaced in your garage (if you have some decent auto repair experience).
This is not an easy job due to the location of the crank sensor.

Below are the steps I used to replace the crankshaft position sensor.
The steps are for a 2004 Nissan Altima with a 2.5 liter engine.

Nissan has a crank and cam sensor kit. I would not buy any aftermarket sensors because of the effort required to replace the sensors. (I do not work for Nissan). The information below is compiled of tips I found on the internet and my own experience. Even though these procedures may appear lengthy, it took me much longer to figure out the correct steps involved for this task.
Even though I have included all of the steps (and hints) I used… THIS IS NOT AN EASY JOB FOR THE “DO IT YOURSELFER”

CRANK SENSOR IS LOCATED AT FIRE WALL SIDE OF BLOCK BETWEEN MOTOR MOUNT AND FLYWHEEL. YOU GET TO IT FROM TOP.
Remove the (4) allen head bolts that hold the plastic engine cover. Remove the air tube that connects the throttle chamber to air filter box. Pull off the valve cover breather hose with the air tube. Now place a drop light under the two rubber heater hoses (at the firewall on the drivers hand side), shining the light forward towards the back side of the block (below the intake runners). To see the crankshaft sensor and connector, look between the valve cover and the throttle chambers (intake runners) on the drivers side, look straight down toward the ground… look for the sensor with a black wire connector with a green tab on the side, held to the engine block with a gold colored 10mm hex headed bolt. You will need to view the sensor from this position as you are following the steps below to remove and install the crank sensor. There is a large wiring harness bracket attached to the transmission bell housing that was temporarily unbolted to aid with the removal and installation of the crank sensor.

What turned out to be the biggest problem was the connector securing the wiring harness to the sensor. Unlike the camshaft position sensor connector that is removed by squeezing in on a tab located at the top of the connector, the crank position sensor was secured to the harness via some green colored push button assembly. To remove the crank sensor connector, the green tab must depressed ALL THE WAY DOWN (towards the block) UNTIL THE GREEN TAB LOCKS INTO PLACE - REMAINING IN A “PUSHED IN” POSITION (You should hear a “click”). I was able to accomplish this by viewing the connector as described above and at the same time, reach around the back side of the engine using a 6” – 8” flat blade screw driver (with a large head) and push the green tab in towards the block until it locked into place. After the green tab was depressed and locked, (still viewing from above) I repositioned my hand holding a smaller flat blade screw driver to gently pry the connector off the sensor inserting the blade of the screw driver between the bottom of the connector and the crank sensor (a slight twist should do it). I do not recommend pulling on the connector wires or trying to pull the connector off with pliers as damage may result - because in my world of auto repair, if there is a chance that something will break because I am not careful… IT WILL BREAK! After you have removed the connector and while viewing from above, use a ¼” drive ratchet with a 6” extension and a 10mm socket to loosen the gold bolt holding the crank sensor in place. I recommend that you loosen the bolt with the socket, then reach your hand around to the connector and remove the bolt by hand. After the bolt is removed, use an 8” slip jaw pliers - set at its widest opening setting – to grab the sensor. First twist then pull out the sensor.

Be sure to clean the inside of the sensor’s wiring connector with break cleaner spray and blow out with compressed air to get rid of any oil that may have leaked into the connector from the defective crank sensor… this is what probably caused the trouble code in the first place.

You are now ready to install the new crank sensor. If you purchased the crank and cam sensor kit from Nissan, make sure that sensor with white dot at bolt whole goes to the crank. Be sure to oil the rubber “O” ring. I was not able to get the green tab on the connector to snap back into place while the new sensor was installed in the block. I installed the connector to the sensor while it was out of the block – the green tab still did not pop back into its original position on its own – so…while the connector was installed as far down as I could push it, it used a small flat blade screw driver to push on the bottom of the green tab towards the top. That did the trick. While viewing from above, I placed the crank sensor back into the block. I was not able to get the rubber “O” ring to seat within the block by hand. I used the gold bolt to draw the sensor in while slowly tightening. HINT: I taped the outside of the washer of the crank sensor bolt to the 10mm socket to hold the bolt on place while I inserted the bolt into the block… you can do this by hand, but I didn’t want to drop the bolt . I also taped the socket to the ratchet extension so the socket would not get stuck on the bolt (it’s a snug fit down there).
If you were able to accomplish the above procedures, the cam sensor is a snap to remove in install. It is located in the driver’s side portion of the head facing the wheel.
Remember to reinstall all brackets and items that were removed.
Good luck!

Oct 17, 2008 | 2004 Nissan Altima

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