Showing posts with label position. Show all posts
Showing posts with label position. Show all posts

Friday, June 6, 2014

How to Install a Northstar Crank Position Sensor

The crank position sensor in a General Motors Northstar engine is part of the sensing and diagnostic system that is controlled by the powertrain control module (PCM). The crank position sensor sends information to the PCM about the position of the crankshaft relative to the engine block. The PCM uses this information to determine when to actuate specific electronic components, such as the ignition. When the crank sensor fails, the engine will not start. Replacement sensors are available from Cadillac dealerships and local auto parts stores.

Instructions

    1

    Place the vehicles transmission in the park or "P" position. Shut down the engine and set the parking brake. Let the vehicle cool for at least 60 minutes before proceeding.

    2

    Open the hood and disconnect the negative battery lead using a battery terminal wrench.

    3

    Locate the crank position sensor on right side of the engine block, approximately three inches above the oil filter housing. It is made from black plastic and is connected to the engine with a 10 mm bolt.

    4

    Depress the locking tab on the sensors electrical connector and unplug the connector from the sensor. Remove the bolt holding the sensor to the engine, using a 3/8-inch ratchet and a 10 mm socket. Grip the sensor with a slip-joint pliers and gently remove it using a twisting/pulling motion.

    5

    Lubricate the new crank sensor with a small amount of clean engine oil. Install the new sensor into the engine block using a twisting/pushing motion. Reinstall the sensors retaining bolt and reattach its electrical connector.

    6

    Reconnect the negative battery lead. Start the engine and verify that it operates properly. The engine should start within three seconds of cranking and run smoothly.

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Tuesday, May 20, 2014

How to Install a Crankshaft Position Sensor on an 05 PT Cruiser

The crankshaft position sensor -- also known as the CKP sensor --detects crankshaft position and rotation on the 2005 PT Cruiser. The sensor relays this information to the electronic control unit and helps determine ignition and fuel injection timing. Wear or damage to the crankshaft position sensor can lead to poor performance or even a non-running condition. The sensor is above the front motor mount so some disassembly is required to replace it.

Instructions

    1

    Set the parking brake and chock the rear wheels. Turn the ignition switch to the Off position.

    2

    Jack the front of the vehicle up. Support the vehicle using jack stands.

    3

    Locate the sensor on the front of the engine just below the starter. Locate the bending strut and structural collar just below the sensor.

    4

    Remove the five mounting bolts from the strut, using a ratchet and socket. Remove the strut from the engine. Remove the three remaining bolts from the collar, using a ratchet and socket. Move the power steering hose aside and then remove the collar from the engine.

    5

    Lift up on the locking tab on the sensor electrical connector. Unplug the electrical connector from the sensor.

    6

    Wipe the surrounding area using a clean rag to remove any dirt or debris that may find its way into the sensor hole.

    7

    Remove the sensor retaining bolt, using a ratchet and socket. Pull the sensor out of its hole.

    8

    Lubricate the O-ring on the new sensor with clean engine oil. Insert the new sensor in the hole and push it in with a slight twisting motion. Align the sensor mount with the bolt hole and install the retaining bolt. Tighten the bolt to 80 inch-pounds, using an inch-pound torque wrench and socket.

    9

    Install the electrical connector onto the sensor terminal. Ensure that the terminal lock snaps into position.

    10

    Hold the collar in its position between the transmission and the engine oil pan. Move the power steering hose into position below the collar. Install the collar-to-oil pan bolt through the forward hose support and collar bolt hole and then tighten it finger tight.

    11

    Place the bending strut in its position and start the upper strut-to-transaxle bolt. Do not tighten the bolt at this time.

    12

    Insert the lower strut-to-transaxle bolt through the strut and collar and start it. Do not tighten the bolt at this time.

    13

    Install the strut-to-block bolt on the passenger side corner of the strut and then tighten it finger tight.

    14

    Insert the collar-to-oil pan bolt through the rear power steering hose support and rear collar hole and then tighten it finger tight.

    15

    Tighten the three collar-to-transaxle bolts to 75 foot-pounds, using a foot-pound torque wrench and socket.

    16

    Install the remaining two strut-to-engine block bolts. Tighten the remaining five bolts to 45 foot-pounds, using a foot-pound torque wrench and socket.

    17

    Remove the jack stands and lower the vehicle using a jack.

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Tuesday, April 15, 2014

The Location of the Cam Position Sensor on the 1992 Park Avenue

Before changing the camshaft sensor on your 1992 Buick Park Avenue, you must determine its location on the engine; the sensor is tucked away under the water pump, and while you can see it from the top of the engine, replacing it requires you to work under the front of the car. A replacement sensor is available from most auto parts stores or through a Buick dealership.

Instructions

    1

    Open the hood of your Park Avenue and locate the water pump on the front of the engine. You will see the water pump is the front-center of the engine block.

    2

    Look near the base of the water pump pulley, along the bottom edge: You will see an electrical connector and harness.

    3

    Follow the harness in toward the block, until you can see a small, round sensor threaded into the block--this is the camshaft sensor.

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