Hello everyone,

I have a 1992 Mazda Miata 1.6 that the alternator belt keeps breaking about everyone two months. So i started to check why is this happening, when i noticed that the belt has a bit of a wobble when the car is running. So i replaced Crankshaft Pulley thinking this was the problem, no this did not correct the wobble. Then I replaced the crankshaft boss and crankshaft bolt in hopes this would do it..nope. So now I replaced the water pump pulley and also replaced the alternator, but the wobble continues! So the next thing that could be is the Crankshaft "Gear"? Or what else could it be fellas i am running out of ideas of what could be causing this, anything that could lead me to the cause of why this is happening would be greatly appreciated! I hope to hear from you guys soon and have yourself a good day.

 

Have you checked the free spin wheel on alternator, its a common failure on alternators.