SOURCE: 03 Altima ( 2.5 ) crank position sensor - retired ASE Master Teck
and YOU took much to long to answer --BUT thanks for your attempt -
SOURCE: Where is the Speed Sensor located on a 2005 Nissan Altima?
An engine speed sensor is mounted on the vehicle’s
crankshaft and is usually where the speedometer gets its data, whereas
wheel speed sensors are located individually at each wheel or axle generating
a signal that changes with wheel speed.
It is important that these two speed sensors are always in good working
condition to provide accurate data. If one of them gives the wrong signal,
control functions of the engine ECU and ABS ECU will be largely compromised.
So to have a long-lasting speed sensor, cleaning it every now and then
is necessary. Simply wipe off the grime it has accumulated with a towel.
Or it’s okay to carefully blow-dry it with compressed air. Anyway,
it does not need to be hospital-clean, it just needs to be free from major
debris and metal media.
If this didn't do it for you call autozone and they can pull up pictures of it for you and it will show the location to the exact positioning.
Hope This Helps
SOURCE: High RPM After Crank Shaft Sensor Replaced
Dear Mike: Nissan has a Technical service bulletin out on problems with high idle.
Reference # NTB05-067 This procedure unfortunately, is one which will take a skilled professional with the proper equipment.
The Nissan Dealer has a diagnostic tool called a "CONSULT-11"
and shops like mine that spend the money on the equipment and software AND TRAINING>>>> can more efficiently address the problem. Even if the shop has a higher labor rate, it may be less expensive to solve the problem if they know what they are doing.
I often get calls from people wanting to know how much my shop charges per hour for diagnostics? I try to get across to them that the hourly rate doesn't always guarantee that they will get a less expensive repair. Then I give them an example: The shop ABC Auto repair down the street charges $10.00 an hour for diagnostics and Shop XYZ charges $100. for diagnostics. Shop ABC has kids who have difficulty figuring out where the hood latch is let alone how to solve the problem. It takes them 10 hours to eventually solve the problem which relates to $100.00. Shop XYZ assigns the car to a seasoned tech who knows the product and has the problem solved in 1/2 hour. Ever though shop XYZ is 10 times more expensive on their diagnostic rate, they were 50% cheaper on their repair! (SORRY TO WANDER OFF THE PATH )
In any case, this is one situation that I feel is best left to a seasoned pro who will take the time to check the technical service bulletins which the shop you had it at should have researched from the start. Had they done that, they could have told you that there were quite a few TSB's out on your car pertaining to performance and safety issues including voluntary recalls. We always check TSB's and if there is a recall & we advise the customer of it. I could take advantage of the customer and make the money on the repair, but would rather gain the trust, confidence and loyalty of that customer. Not to mention the word of mouth it brings!
I hope I have helped you some. If not, let me know a little more detail on the symptoms: Does it surge, while driving does it do it under all conditions or only at operating temp? You get the picture.
SOURCE: 2004 nissan altima 3.5 code p0340 (cam Sensor)
check the pin connectors to see if there split open and not making contact
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