I have no idea whats going on with my truck, and I haven't had the opportunity to take it to the dealer yet. I have a 2007 TRD Off-road 4x4 that has about 97,000 miles on it. I do regular maintenance, and have not really abused this truck at all. It was an insurance replacement for my previous LT tacoma (same model year), that was t-boned by someone running a light. Anyway to the point I haven't modded this truck yet at all, I have some plans as I am looking at a new daily driver.
The fact is I recently took in the truck for 90,000 mile maintenance at the dealer, and my problems began. Basically the only real noise the truck made before was like a plastic rattling noise when the engine reved or when driving at high speeds (I think it was just the dash) because usually hitting the dash in the right spot solved the problem. Now having gotten the maintenance, there is a whirring or rattling noise with acceleration and revving (sounds like when you vibrate your tongue in your mouth and exhale) and causes a vibration (sorry for the bad description). To me it sounds maybe like a slightly loose belt or something (I assume they replace or adjusted belts with the service).
What do you think?