Problems, Maintenance, and Repair (Gen 2)
I have an 04 Sienna with 130k miles. First it started hesitating for a few weeks then started to have a lack of power all the time. It throws Codes 171, 300, 302, 304, 306. Replaced plugs, coils, cam sensors, crank sensors, maf, checked timing & vacuum leaks. None of this helped. After playing...