Nissan Altima Crankshaft Position & Camshaft Sensor Replacement Guide Show Driver's Side, Below Throttle Body Owners of other 3rd generation 2002, 2003, 2004, 2005 & 2006 Altima sedans should find these DIY instructions to be helpful. In the above row of photos you can see the location of the camshaft sensor on the driver's side of the engine and the crankshaft position sensor is down on the back side of the engine (best seen from under the car & removed from above). To replace either sensor you will need a 10mm metric bolt and a ratchet wrench. Don't forget the rubber o-ring. Upon inspection of the motor, my brother pinpointed the source of the oil leak to be the crankshaft position sensor. The reason that the engine was leaking oil was that a careless auto mechanic neglected to install an o-ring on to the sensor during the car's 60,000 mile service. When replacing either sensor, be sure to inspect the rubber o-ring and verify that it is actually on the sensor! The mechanic also must have removed the wire harness connector with a screwdriver because it was practically falling apart. A few compatible replacement camshaft position sensors with their part numbers include the following: OEM 96239, Standard Motor Products PC464, Nissan 23731-6N21A, Dorman 530-010 and Delphi SS10818. Some replacement crankshaft position sensors with their part numbers are as follows: Nissan 23731-6N21A, Wells SU6364, Standard Motor Products PC464T, Hitachi W0133-1796511-HIT and Delphi SS10816.  Broken Harness Connector Crankshaft Position Sensor Engine Camshaft Sensor Broken Air Box Tab Camshaft Sensor Removed Besides destroying the wire connector & forgetting the o-ring, the thoughtless "automotive repair technician" also broke a retaining tab on the air box cover, crushed the air filter with his elbow, and neglected to replace a vacuum hose's clamp. Camshaft & Crankshaft Sensors Connector From Junkyard We needed to get this car running today and the only option was to visit a wrecked automobile parts recycling center, a.k.a. a junkyard. Luckily the junkyard had a totaled 2006 Nissan Altima with the engine wiring still intact. After we cut off the camshaft position sensor wire harness connector, all we had to do was splice it up to the '02 Altima with butt wire connectors. If you don't have a junkyard in your area, I recommend buying the OEM Nissan 23731-6N21Acamshaft sensor and also the Nissan 23731-6N21Acrankshaft sensor. Sensor With Rubber O-Ring Butt Wire Connectors Wire Butt Connectors Crimped For the best electrical connection, I recommend using crimp connectors. If necessary, you could also just twist the wires together, wrap them in electrical tape and use cable ties to secure the tape. 10MM Sensor Bolts Attaching New Connector Protective Wire Loom Connector Replacement Complete Camshaft Sensor Inserted 10 Millimeter Bolt Secured Altima Air Box & Air Intake Tube Are there 2 camshaft position sensors?While the number can vary based on the age of your car, a new car should have four camshaft sensors, one for each camshaft. A camshaft sensor determines the exact position of your engine's camshaft, helping your car keep your engine's combustion running smoothly.
What are the symptoms of a faulty camshaft sensor?A glowing check engine light, stalling, poor acceleration and bad fuel mileage are all possible signs your camshaft position sensor may be failing. Gone are the days of carburetors and distributors, replaced by a variety of sensors that help a car's computer get the maximum performance out of the engine.
Which side is the bank 1 camshaft position sensor?Bank 1 is the side of your engine that has the cylinder 1, while sensor B refers to the exhaust camshaft side.
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2003 nissan altima 2.5 camshaft position sensor location
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