Question about 2000 Nissan Altima
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Posted on Jan 02, 2017
SOURCE: crank shaft sensor
I have 10 years experience in a Nissan dealership and I know without a shadow of a doubt that the Crankshaft Position Sensor is NOT located next tp the crank pulley... it is rather at the other end of the engine near where the transmission bellhousing bolts to the engine block. It is on the side toward the firewall near the bottom. Even if you can get the vehicle on a lift and get under it, you can't really see it... It's more of a feel thing... There was a campaign (recall) on these engines to replace Crank Position and also Cam Postion sensors. Check with your dealer- the campaign might be open. You will need your VIN number when you call.
Posted on Oct 29, 2008
It is small and round (2 wire connector) and located either in the flexiable air intake hose to the engine or in the engine air filter housing.
Posted on Nov 18, 2008
I just replaced the driver's side headlamp on my 2000 nissan altima. The manual advises you to take it to a dealer or details a long process which involves removing the bumper protector -- none of this is necessary. I am not mechanically inclined and a coworker and I did it on a lunch break. Here's how:
1) Disconnect the battery by loosening the nuts that attach both the positive & negative contacts.
2) Once loose, slide off the contacts. At the base of the battery (closest to front of the car) there will be another nut that you'll need to remove (this loosens a clip which holds the battery in place)
3) Once loosened, lift out the battery which will enable you to see the headlamp connection.
4) There is a white plastic ring that attaches to the headlamp connection. Twist this to the left (about a quarter turn).
5) Once you have loosened the white ring, you should be able to gently pull out the headlamp assembly.
6) Remove the headlamp from the socket by pushing on the plastic arm which will release the lamp from the socket (sounds confusing, but once you have the piece in your hand it will make sense)
7) Insert the new lamp into the socket & slide assembly back into the hole. Note. There is a groove in the assembly which will align with a notch in the headlamp frame...you can see this by looking through from the front of the headlight cover on the outside of the car.
8) Replace the white ring and twist to the right to secure in place.
9) Replace the battery & bolt you remove.
10) Replace the positive & negative connectors (hint: don't forget to replace the plastic battery cover before you attach the connectors).
Hope this helps...let me know how you make out.
Posted on Feb 05, 2009
1st, Nissan had a recall on Crank position sensors for 2002-2006 Altima's. Check with you dealer before you go doing any repairs. You may discover you can get your car repaired at no charge.
NHTSA Campaign ID number :O7V527000
Symptom: Erratic behavior. Stalling and no starts and very difficult to diagnose due to the time frame in which the component actually malfunctions. The warranty should not be limited to the original owner.
I would also need more specifics as to which engine you have so I might assist you in where the location of the sensor is. The Altima had a 4 and a 6 cyl engine offered that year.
Posted on Apr 06, 2009
Crankshaft and Camshaft Position Sensors
Camshaft Position Sensor
Engine timing is determined from the relationship between the crankshaft and camshaft. This relationship is maintained by a timing chain or timing belt. The Engine Management System does not control engine timing but it does monitor the relative position and speed of these shafts by monitoring signals generated by sensors. The Engine Management System (EMS) uses signals generated by the camshaft position sensor to synchronize fuel injection to the valve sequence and for the on-board diagnostic procedure for misfire detection. The EMS energizes the injector at or near the time the intake valve opens. For misfire diagnosis, the EMS compares the number of camshaft sensor reference pulses and the number of crankshaft position sensor reference pulses received. If the EMS receives an incorrect number of pulses Diagnostic Trouble Codes (DTC’s) should be stored in the EMS.
If the camshaft position sensor or circuit is faulty most engines will start. Some engine management systems will then default to a pre-programmed injector firing sequence. All injectors may be energized simultaneously or all of the injectors on one bank may be energized at the same time. If the CMP data is required for misfire detection and reliable CMP data is not present misfire detection would probably be suspended.
Related Symptoms The following symptoms can be caused by an intermittent wiring connection or faulty signal to the EMS:
In addition the EMS uses minute variations in the CKP sensor data to determine engine misfire. The EMS uses this information in conjunction with the camshaft position sensor to perform misfire diagnostics.
Related Symptoms: No Start/Intermittent Start Condition – Can be caused by a faulty crankshaft position sensor due to loose connections, bad grounds, high resistance in the circuit, or opens in the circuit
Posted on Jun 23, 2009
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