I noticed a rumbling noise, so I’m doing some maintenance on the parts I’ve been concerned about. First up: replacing the pulley bearings. I pulled the old ones out with a bearing puller and pressed the new ones in with a bench vise.
Next up: the alternator. I also upgraded the capacity from 120A to 150A. After the swap, the voltmeter now sits steady at 14V. Before, it was hovering just above 12V, so I’m guessing a steady 14V is what it should be.
Replaced the MAF sensor too. The engine now revs noticeably more freely above 4,000 rpm.
As for the rumbling noise that started all this, unfortunately it’s still there. Odometer: 47,308 km.
