Factory defect? Something rock etc. thrown up under vehicle?
With a harmonic balancer puller.
It is located on the harmonic balancer.
on the harmonic balancer.
The most common reason for the harmonic balancer breaking on a 1994 Pontiac Bonneville SSEI is the inner and outer mass is breaking the balancer down. This happens because your engine is running rough or too high of RPM's.
Replace the Harmonic balancer
It is behind the Harmonic balancer at the bottom pulley on your motor.
The balancer is attached to a flywheel that drives the serpentine belt for the water pump, power steering, etc. If harmonic balancer doesn't work, belt won't run, and eventually, neither will the car.
The crank sensor is located behind the Harmonic balancer. Try not to break the rubber within the Harmonic balancer when removing or on the safe side replace both the Crank sensor and the Harmonic balancer ( the big pulley on the bottom - most part of the engine.)
do the harmonic balancer have a seal for anti-freezer
Harmonic balancer replace
The crankshaft position sensor is located behind the harmonic balancer. You will need a harmonic balancer puller and an impact wrench good for at least 750 ft pounds. Access the harmonic balancer through the passenger side wheel well. Remove the harmonic balancer center bolt and use the puller to remove the balancer. Use 1/4 - 28 X 3 inch bolts on the puller. The sensor is held with two screws. Be careful not to damage the weatherpack connector when releasing it from the sensor.
The harmonic balancer is located on the front of the crankshaft