One problem related to engine knocking noise has been reported for the 2006 Toyota Tacoma. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 Toyota Tacoma based on all problems reported for the 2006 Tacoma.
When first startup in morning, I hear a bad knocking noise it goes away after the engine warms up but as soon as it cools off, it is back again. . Happens mostly when it is cooler.