Question about Nissan Altima

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2005 nissan altima se V-6 the 1,2,and 3 spark plug but now we change new coil to 1,3, and 5 and old cold 2,4, and 6 the one that burn out are 1,3 and 2 but other don't burn out 5,4, and 6

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  • Nissan Master
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Aged / failing crank shaft position sensors (CPS/CAS) can snow ball into coil firing problem.

There are two CAS on your V6 engine.

They are identify as front and rear CAS.

There is a matching set for automatic and stick shift engine.
THEY ARE NOT INTERCHANGEABLE

Computer (ECM) short may not getting correct crank position information/pulse from crank angle sensor (CPS/CAS)

Please identify the front and rear CAS and clean the connectors.

Re-check firing on all cylinders..
Front CPS
2005 nissan altima se V-6 - 63d8a1d.jpg

Rear CPS (automatic transmission)
06ea6c4.jpg
Rear auto CPS from different angle
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You will need a Fluke or high quality meter to check on the resistance on coils and the CPS.

Please email me after you clean the CPS contacts and coils contacts.


Posted on Jul 11, 2010

  • Vincent_G
    Vincent_G Jul 19, 2010

    Are you able to locate the front and rear crank position sensors?

    Clean the contacts and make sure the connectors are all the way in.



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