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Also I fear the crank bolt is loose. I noticed a slight wobble in the pully. should I not drive


Unless you feel like doing a lot of additional repairs I wouldn't drive it at all until you confirm the condition of the harmonic balancer and the bolt. Make sure your engine has the updated crank pulley bolt and that it's correctly torqued to the revised torque specs.

If you need more info do a search - it's been covered on this forum a zillion times.

95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes