Could be a number of issues! To be sure you need to get the engine codes read! Take to a garage who can check the codes and this should indicate where the problem is!
SOURCE: 2003 altima nissan
HI. I read your problem.
Let me ask you,
The sensor that you are installed are from the dealer or aftermarket?
Because the crank sensor on a 02 to 06. altimas where defectives. or damaged to fast.
Is why NIssan company Made a complety diferent new sensor.
Trying to resolve this problem.
If you haven't get from the dealer, I recomment get one from them. When you see the connector on inverter position don't worry it will fit.
But if you install from the dealer. I recoment check the engine for high vibration.
Check the crankshaft for end play.
And check the wires from the sensor for short, or burned shield.
OK> I hope this work for you..
I have changed few of them..
SOURCE: CRANK SHAFT POSITION SENSOR 20002 NISSAN ALTIMA
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.
SOURCE: sensor recalls for 03 nissan altima
No recall information on that situation at this time. if you suspect this, you can contact the dealer and provide your vin and they can look up a new or non released recall for your vehicle. If this recall has just been released, it will take some time to circulate though the recall system. at this time, nothing is showing up on our systems on a recall for the crank and cam sensors.
SOURCE: crankshaft and camshaft sensors location in nissan altima 2003
You are incorrect sir. There is a very good Youtube video showing you exactly where it is that is how I changed mine. The Crankshaft is located behind the engine block below and around from the cam sensor which is easly spotted looking at the engine. The crankshaft is in a difficult spot but once you figure out where it is it's easy...ish hope this helps
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