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2003 Honda Accord Question: which camshaft position sensor is A? there is two, front and back

 

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billroy1971, 2.4L 4 Cylinder, Lewiston, ME, December 31, 2012, 10:27
 Rookie

was told i need to change one sensor and was told it was sensor A

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  • Answer #1

    Tomiko December 31, 2012, 11:07
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     Journeyman

    is this a V-6?

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  • Answer #2

    PARTS GUY December 31, 2012, 11:16
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     Master

    Tomiko if you read the post he states 4 CYL.
    Billroy1971, there's only one camshaft position sensor. What is the problem, not diagnosis, with car.

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    Tomiko, December 31, 2012, 11:24
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     Journeyman

    im sorry parts guy, i just read that he had two camshaft position sensors so i got confused

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  • Answer #3

    ziptie12 December 31, 2012, 20:31
     Master

    It's the sensor on the intake cam. be prepared to replace the chain , tensioner and guides , along with the VTC actuator , after the sensor doesn't fix the problem. If able to , post specific code(s) for a better response. How many miles are on engine and does it have a poor history on oil changes?

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    PARTS GUY, January 01, 2013, 00:05
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     Master

    Ziptie12 your are correct. That's one of the downfall of using a timing chain. I strongly recommend to my customers to use a full synthetic oil that have a chain driven cam/cams. The only two that I recommend is AMSOIL or MOBIL 1. The reason why is these lubricants will not sludge. The most common problem is the VTC, sludge builds up setting a P0341.

    Customer Concern:
    Malfunction Indicator Light (MIL) is on. Camshaft Position (CMP) sensor and Crankshaft Position (CKP) sensor incorrect phase detected code P0341. The code resets instantly when the engine is started A bolt for the Variable Timing Control (VTC) oil control solenoid is corroded in and afraid of breaking it, so don't want to remove the VTC oil control solenoid to test it.
    Tests/Procedures:
    1. Apply power and ground to the VTC oil control solenoid while listening to the solenoid with a stethoscope and hear if the solenoid clicks and operates.
    2. Also with the engine idling, energize the VTC oil control solenoid valve and see if the engine RPM drops and if the engine runs rough to verify the VTC system operates and is not sticking.
    3. If the VTC system seems to be working ok, remove the Camshaft Position (CMP) sensor and the valve cover. Put the engine on TDC for cylinder #1 compression. There is a machined hole in the CMP sensor pulse plate (reluctor for the CMP sensor). With the engine on TDC for cylinder #1 compression, use a drill bit through the hole of the CMP sensor pulser to verify the drill bit goes straight through into a hole in the cylinder head, to verify the camshaft timing is correct. If the drill bit does not go through into the cylinder head, the camshaft timing is off and the timing chain will need to be checked/replaced.
    Tech Tips:The VTC actuator is the intake camshaft sprocket.

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    ziptie12, January 01, 2013, 18:07
     Master

    After all this , it would be nice to see a reply to know if billroy1971 bothered checking back on their question.........

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    PARTS GUY, January 01, 2013, 19:20
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     Master

    You are correct BA. I have given up a long time a go if the people that ask questions actually pay attention to what we advice. After all we only have about 80 years experience between you and me. I apoligize Greg, another 40 years.

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    ziptie12, January 01, 2013, 20:35
     Master

    HEY Greg doesn't look THAT old!!!

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