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crank shaft sensor is located behind the harmonic balancer.crank positon sensorsends a signal tothe ecm totel both engine rpm and crankshahf position.a failure in this sensor or circuitshould set trouble code and usually no start condition.other symptoms includes stumble at idle or stalling. first dis connect negative battery terminal . chock the wheels to keep vehicle from rolling.then jack the front of the vehicle and remove the passenger side tire . take the splash guard cover of (a little plastic piece) . then take remove the serpentine belt . then get a socket that fit the bolt to the harmonic balancer . get a short sided socket , a 1/2 in. drive and a breaker bar. and loosen the bolt . u may need to spray some wd40 or somethimg on the bolt . so it loosen up . then to fight it . then get a harmonic balancer pulley .once remove u can take off the sensor and re-install the same way.

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2007-06-22 03:02:55
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Q: Where is the crank sensor on a 1991 park ave how to replace it?
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What would cause a 1991 Buick Park Avenue not to start when the engine is cold?

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Where is the crank sensor located on a 1991 Buick Park Avenue?

It's just behind the harmonic balancer.

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