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Facing your engine from the front of your car, the alternator is on the mid left side below your ECCS/Throttle body/Intake.

There are 2 bolts you will have to loosen.

The first is the bolt on the FRONT side of your alternator tensioner. It takes a 12mm socket or wrench. This will free up the tensioning bolt that is located to the LEFT of the first bolt which you can unscrew to loosen your belt. I believe it also takes a 12mm socket. (I took off my intake tubing to get to it.)

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Q: How do you loosen alternator belt on 1989 Nissan 240 sx?
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