Question about 1997 Pontiac Grand Prix

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Stuck crankshaft postion sensor 98 3.1 gm

Removed bolt and the sensor twists, it just doesnt pull out

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  • Eric Semrow Nov 29, 2012

    It's the 7x cps

  • Eric Semrow Dec 02, 2012

    Thank you. I was able to use a long flat head screwdriver from under the car and popping the sensor out in one piece. Thankyou for the advise

  • Eric Semrow Dec 02, 2012

    Now the car starts, but i runs awful. I cant get it about 2500 rpms. I verified spark on all six cylinders. As well as replaced the 7x sensor. My next step is to check fuel flow, however, once it ran it was rather rough and kicks a p0300 only. Any advise?

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  • Pontiac Master
  • 5,332 Answers

Keep twisting and gently prying out on it. They are known for being stuck in the block. It is very common for them to brake off in the block. If that happens you will need to pull the oil pan to remove the broken part. I have on many occasions had to purposely brake them and then carefully drill into the broken part enough to get a screw threaded into it and then pull them out by the screw.

Posted on Nov 29, 2012

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SOURCE: key stuck

Under the steering colume the should be a small hole or a small cover that you can take out to reveal a small hole that you can reach up into and push on a silver cylinder type thing pulling it back towards you and that should release the key.

Posted on Mar 02, 2009

csmock132
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SOURCE: 1997 Bonneville - can't remove crankshaft pulley

You need a three jaw puller to remove the balancer. After you remove the center bolt the puller hooks into the three holes in the balancer.

Posted on Jun 08, 2009

  • 202 Answers

SOURCE: Crankshaft firing postion sensor

looking down at the crankshaft pulley , behind the crankshaft pulley's right hand side is the ( CPK ) .

Posted on Mar 29, 2010

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How to change crankshaft sensor on 1999 grand price gt


To get to the sensor, the harmonic balancer pulley on the crankshaft has to be removed. The center bolt on the harmonic balancer is on very tight. To loosen without an impact wrench, remove starter motor and wedge a piece of wood against the flywheel, or use a pry bar and hold the ring gear on the flywheel rigid, while loosening the crank bolt. The engine will try to turn backward when you loosen the crank bolt, so you have to hold the flywheel rigid. Once the bolt is removed, see if you can get the harmonic balancer pulley off without a gear puller. Just try tapping it to see if it slides off, or use two screwdrivers on each side behind the pulley and see if you can start it sliding off. If it is on very tight, as many are, you will have to get hold of a harmonic balancer removal tool-a simple, inexpensive puller that bolts onto pulley and can be drawn off. You might be able to rent the tool too.
BTW, you will need to have the wheel removed from passenger side, and the inner fender cover removed to get to the crankshaft. Once the pulley is off you can unbolt the sensor and put the new one on. GM recommends using a sensor alignment tool to install, because the thin vanes on the back of the harmonic balancer pass through the sensor, and if not aligned right could damage one or the other. If you don't have the tool, put the sensor on loosely mounted, just snugged up finger tight, then test the pulley will slide through the sensor slots without touching either side of sensor. If it looks right, tighten down the sensor in place, install the harmonic balancer pulley and tighten the center crank bolt to about 105 foot pounds.
Wedge the flywheel again so the engine won't turn when tightening the crankshaft bolt.
Good luck, and hope you get it.

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3_13_2013_4_59_57_pm.jpgJust one bolt,pulls out of the block.

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Were is the crankshaft sensor located at on 96 neon


  • It is located on the firewall side of the engine block, passenger side, under the power steering pump. Unplug the electrical connector on the crankshaft sensor by lifting the plastic lock tab and pulling it off.
  • 2Remove the 10 mm bolt that secures the sensor to the block, using a socket. The bolt is in the hold down bracket. Twist the sensor to ease removal.
  • 3Insert the new sensor after checking to make sure that the O-ring is installed to prevent oil leaks and the spacer that comes with the sensor did not fall off. Insert the sensor and give it a little twisting motion as it is installed. Align the hole in the hold down bracket and insert the 10 mm bolt and tighten with a socket. Plug in the electrical connector.
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    The crankshaft position sensor on your vehicle goes through the engine block and is held by a single mounting bolt.
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