One problem related to engine 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.
For at least 2 mos previous I would hear a chirping noise from the engine compartment. It would get louder as you accelerated & seamed more noticeable in warmer weather. Took vehicle in to dhc torrance Toyota & said it was my idler bearings. I thought that was odd since the truck only has 37400 miles. It cost me over $800. 00.