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Thread: Cam Phaser issue 2012 Mustang GT VCT

  1. #1
    Advanced Tuner Boost's Avatar
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    Question Cam Phaser issue 2012 Mustang GT VCT

    I have searched and read 2 pages worth of thread topics and learned a lot about stiff springs causing issues as well as VCT deletes.

    However my issue is on a stock cams and stock springs 5.0.

    I had the crankshaft balanced and the heads ported, since it spun a bearing due to an oiling issue and I was upgrading the oil pump.

    During re-assembly I decided to replace all four phaser actuators, just since they were not that expensive and I had them out anyway.

    The stock harness connectors did not fit the upgraded design (VIN correct) actuators so I had to splice in adapters recommended by the local Ford dealer parts department. I think I did a very decent job with the connections.

    The car started right up as all is well mechanically except all four phasers are setting codes, and since the electronic valve timing is off, the car is running rough and it turns over a few times before starting.

    Is there a sort of re-set / programming / calibration that needs to be done due to replacing the actuators and rebuilding the engine??
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado

  2. #2
    Advanced Tuner Boost's Avatar
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    Correction they are Camshaft Position Sensor codes. Could anything in overhauling the engine and replacing the phasers and actuators cause Position Sensor codes -OR-
    is it going to be an issue isolated to the sensors themselves and their connections?

    (They can only go into the correct holes in the back of the head, different sizes and dark is exhaust/light is intake and connectors only reach and plug in one way)

    P0340 Camshaft Position Sensor A Circuit Bank 1
    P0344 Camshaft Position Sensor A Circuit Intermittent Bank 1
    P0335 Camshaft Position Sensor A Circuit Bank 2
    P0349 Camshaft Position Sensor A Circuit Intermittent Bank 2
    P0365 Camshaft Position Sensor B Circuit Bank 1
    P0390 Camshaft Position Sensor B Circuit Bank 2
    P0394 Camshaft Position Sensor B Circuit Intermittent Bank 2

    I heard on older cars it could even be the alternator...??
    '12 Caprice PPV 6.0 L77 - daily transportation
    8.7 @ 84 (1/8 mile) bolt-ons

    '02 Silverado RCSB 5.3 L59 - regularly street driven
    8.2 @ 86 (1/8 mile) stock cam and spray
    8.6 @ 84 (1/8 mile) cam and heads no spray

    Our YOUTUBE CHANNEL featuring the Silverado

  3. #3
    Tuner in Training
    Join Date
    Jul 2019
    Posts
    28
    Quote Originally Posted by Boost View Post
    Correction they are Camshaft Position Sensor codes. Could anything in overhauling the engine and replacing the phasers and actuators cause Position Sensor codes -OR-
    is it going to be an issue isolated to the sensors themselves and their connections?

    (They can only go into the correct holes in the back of the head, different sizes and dark is exhaust/light is intake and connectors only reach and plug in one way)

    P0340 Camshaft Position Sensor A Circuit Bank 1
    P0344 Camshaft Position Sensor A Circuit Intermittent Bank 1
    P0335 Camshaft Position Sensor A Circuit Bank 2
    P0349 Camshaft Position Sensor A Circuit Intermittent Bank 2
    P0365 Camshaft Position Sensor B Circuit Bank 1
    P0390 Camshaft Position Sensor B Circuit Bank 2
    P0394 Camshaft Position Sensor B Circuit Intermittent Bank 2

    I heard on older cars it could even be the alternator...??
    Sounds to me like your oil pressure is still low. Or your phasers are worn and not holding enough oil pressure to change cam position. which would yield your camshaft pos codes. I am willing to bet your oiling issue still exists