Wells Nissan P0507 Relearn Cam and Crank Sensor location and Testing
http://www.wellsve.com/ This video will locate and test the cam and crank sensor on a 2004 Nissan. It will also demonstrate an alternative method to relearn the idle air control. When a P0507 or a high idle occurs after a throttle body clean, the TSB requires the use of the factory (Consultant II) scan tool to reset idle air control. The reset can also be performed by following the steps in this video, without a scan tool.
The information presented in this program is based on a specific diagnostic case and might not directly apply to the vehicle you are repairing. We do not represent or warrant that the information presented is complete or error free. Please take all safety precautions. We disclaim any and all liability for losses, injuries or damages in connection with your repair.
2003 Nissan Altima S - Camshaft & Crankshaft Position Sensors
2003 Nissan Altima S 2.5L W/Automatic Transmission
INTERMITTENT NO-STARTS & ROUGH-STARTS WITH NO DTCs SET.
A LOCAL AUTOSHOP HAD REPLACED ONLY THE CAMSHAFT POSITION SENSOR, MADE SURE
NO DTCs PRESENT AND OPS CHECK GOOD.
HOWEVER, THE PROBLEM RETURNED.
NOW, THE SAME AUTOSHOP BELIEVES THAT THE FAULT IS WITH THE TRANSMISSION
FLEX PLATE, WHICH MAY HAVE DAMAGED THE CRANKSHAFT POSITION SENSOR AS WELL,
ACCORDING TO HIM.
ESTIMATE IS AT ~$750.
The mechanic didn't try to replace the Crankshaft sensor alone, he went
straight for the Tranny drop. I figured go with the cheap fix first. If it
comes back, then we will look into the Flex Plate.
I replaced the recently replaced Camshaft sensor & the never been replaced
Crankshaft sensor. So far, so good.
Replacing the Camshaft sensor is a 2-minute job.
The Crankshaft sensor will likely take 30 times as long.
It seems like the Old Crankshaft Position sensor I removed was a bit high
on a resistance check, when compared to brand new sensors. With too high a
resistance value, the sensor may not make use of the full voltage it is
receiving and/or it may not return the required amount of voltage to the
Powertrain Control Module (PCM), which will lead to irregular engine
operation or a no-start condition.
Both Camshaft & Crankshaft sensors are the same part number. The 3rd
version of the sensor is encased in metal, not plastic.
The OEM part number is 23731-6N21A ($44 us)
The old part numbers were encased in plastic. These part numbers should not
be used: 23731-8J005 & 23731-8J006
FOR ONLINE PART PURCHASE:
"DIGITALDXING" PROVIDED THE LINKS LISTED BELOW AND POSTED SOME PICTURES
(2003 NISSAN ALTIMA 2.5L)
"PAUL" POSTED HIS PICUTRES HERE (2002 NISSAN ALTIMA 2.5L)
"DENTNSHELL" POSTED HIS FIX HERE (2005 NISSAN ALTIMA 2.5L)
"MULEMAN" POSTED A GREAT STEP-BY-STEP WRITE UP WITH PICTURES HERE (2006
NISSAN ALTIMA 2.5L)
Thanks a bunch, muleman.
...ACTUALLY, THAT WHOLE THREAD AT NISSANCLUB.COM IS A GOOD READ.
Best Answer - Chosen by Voters
Nissan recalls that problem to reprogram the ECU. What happens the crank
sensor electrical terminals seep oil into the crank sensors plug. The new
metal crank sensors correct this problem. Location of this sensor on the
back of the motor is difficult to change and you need gorrilia finger grip
to depress the connector green lock and remove the sensor. Depending on
your cars Vin# Recall Campaign # R0712 NHTSA# 07V-527. Hopefully your
factory warranty replaces the sensor no charge 5yr/60,000 mile. The
campaign only covers the ECM reprogram. The ECM reprogram makes both
sensors act as one so either will allow the car to start. Stalling and not
starting is a safety risk.
Nissan Master Technician (John Paul)
For some information on related DTC faults:
Throttle Body Cleaning - Dirty Throttle Body Symptoms and Problems
http://www.TrustMyMechanic.com (visit my site for TONS of free auto repair
Throttle body cleaning. Does your car idle rough, does the engine seem
like it is trying to die when you are at a stop light, is the engine taking
a little longer to start than normal?
You might have a dirty throttle body and that is something you can repair
yourself. In this video we are cleaning the throttle body on a 2005 Ford
F150 pick up truck with a 4.6 V8 engine.
Using just a wire brush and some throttle body cleaner made by BG, or you
can use any throttle body cleaner made for throttle body service which is
available at your local auto parts store.
If you want to learn more about car maintenance and what you can do
yourself to help save money. Visit my site link at the top.
"Common Throttle Body Symptoms and Problems"
What are the most common complaints I see in my auto repair shop that are
related to a dirty throttle body?
1. Rough idle speed. We like to call this hunt and peck, like a chicken
does when it is looking for food. The engine is trying to keep a steady
idle speed but the carbon build up in the throttle body plates are not
allowing it. So the engine is hunting for a steady idle speed, which causes
the roughness you feel inside the vehicle.
2. Slower starts or extended starting periods. You might have to crank the
engine over much longer than you used to. The engine might start and die,
and you have to crank it again. These are pretty common complaints when
there is a dirty throttle body issue.
3. Dies at stops. The engine is having a hard time keeping the idle speed
high enough without dying. This complaint is worse with the air conditioner
on, since there is more load on the engine with the A/C compressor on. A
dirty throttle body will cause the engine to decrease the idle speed as the
vehicle comes to a complete stop, and will eventually die. Restarting can
take some time as in the extended crank complaint above.
This is a common complaint and the throttle body as well as the idle speed
control motor should be cleaned periodically as part of regular scheduled
I have more useful information on my website...for free, nothing to buy.
Also of interest.
throttle body service
how to clean throttle body
throttle body cleaning
what is a throttle body
throttle body symptoms
throttle body problems
throttle body cleaner
clean throttle body
Nissan P0505 P0507 Recalibracion de minimo y prueba de sensor de arbol de leva y ciguenal
http://www.wellsve.com/ Este video localiza y prueba el sensor de arbol de
leva y ciguenal en un Nissan 2004. Demuestra un metodo alternativo para
reconocimiento de minimo. Cuando un codigo PO507 o de minimo elevado ocurre
despues de limpiar el cuerpo de valvula. Esto puede hacerse sin un scanner.
La información presentada en este programa se basa en un caso de
diagnóstico específico y no puede aplicar directamente al vehículo que
está reparando. No le garantizamos ni representamos que la información
presentada es completa y sin errores. Por favor tome precauciones de
seguridad. Declinamos toda responsabilidad por pérdidas, y daños en
relación con su reparación.
How to Test Crankshaft and Camshaft sensors 1
How to Test Crankshaft and Camshaft sensors 1
Amazon Printed Books
Amazon Kindle Edition
Shows the operation and testing procedures of automotive cam and crk
sensors, which supply the ECM with engine camshaft and crankshaft position.
These two signals are essential for the engine to run. (note: We allow all
schools and training institutions to use our software free of charge, so
long as it is not sold to others. You're encouraged to download our free
automotive simulation software for more information.
Amazon Printed-Books & Kindle:
Google Play Android APPs:
Amazon Video DVDs:
Barnes & Noble Nook:
Apple iTunes iPad:
2004 sentra idle relearn won't work
Did the process multiple times and didn't work.
On 2 sec
Off 10 sec
On 2 sec
Off 10 sec
Ignition on then off to make sure valve is closed.
Start car let it warm.
Turn off 10 sec.
Turn key to on for 3 sec
Press pedal 5 times in less than 5 sec.
Wait 7 sec then press in pedal and hold
When light starts flashing then goes solid let go within 3 sec
Start car after.
Any ideas why not working?
1998 Nissan Maxima with nasty sounding rattle
EDIT: I still don't know exactly what the problem was but the end result
was I had a local shop install a newer used engine (VQ30DE) which wasn't
too expensive to have done. Good luck to anyone else having a similar
Other than this rattle my car has been in fine working order. I have done
all of the preventative maintenance. It has 180,000 miles and started
making this rattle sound only a few minutes after I drove over a small flat
object with my tire. My car has a timing chain that uses a tensioner to
keep it from having too much slack but those tensioners can fail from time
to time. Before just replacing parts here and there I would like to have
some other people's perspectives on what may be causing this noise. Any
suggestions would be greatly appreciated.
Also, it spit out two codes:
0608 - Cylinder No. 1 misfires (many possible causes listed but I wouldn't
be surprised if one of my injectors went bad as 1 or more of them have been
making more and more noise over time).
0304 - Knock Sensor; an excessively low or high voltage from knock sensor
is entered to ECM; possible causes include short in Harness or Connectors
or a bad Knock Sensor.
Possible causes I can think of:
-Bad rod bearing
-Foreign object in valve train
-Bad timing chain tensioner
-Bad sensor which could be the camshaft position sensor, the crankshaft
position sensor, the knock sensor, or an oxygen sensor.
-Bad fuel injector
Mode 6 misfire diagnostics on a 2002 Expedition by Wells
http://www.wellsve.com/ Pinning down which cylinder is misfiring when the
check engine light has not illuminated can be a serious challenge,
especially when the problem only occurs under a heavy load. This video
shows you how to use mode 6 as a diagnostic tool to pick out which cylinder
is misfiring on this Ford Expedition.