Hey guys looking for help to figure out what this rumbling noise could be. I drove my 01' 3.4L TRD today and started to feel like something was not right. Kinda felt like the truck was being dragged down, like a loss of power. It kinda felt like it does when you press the breaks while pressing the gas pedal at the same time. Also felt like it took more from the engine to get the wheels turning. Then when I got home I heard a rumbling noise. Kinda sounded like a bad exhaust leak. I listened around the entire exahuast system but it sounded fine. I opened the hood and the engine sounds fine when it's in park. But when I put it in drive with the E Brake on, I walked around to the front and put my ear down by the front grill and could hear a rumbling sound. I could hear it best when my ear was close to the radiator. The engine still sounds fine when in drive but that's when I can hear the rumbling noise comming from somewhere infront of the engine, but not the engine it self. I do have really old and cracked belts that are being changed tomorrow. But I don't think old belts would cause this, or maybe they could, I don't know? The rumbling sound doesn't sound like a liquid or else I would think radiator. Any one heard this or have some similar instances before?
If I put my ear by the engine it sounds fine, I can hear the rumbling the loudest when my ear is in front by the Toyota emblem on the grill. Sounds like its comming from radiator or the fan. But again, it DOESNT sound like water or liquid bubbling, it sounds more like a rumbling.
HELP! I hate when my Tacoma isn't running perfectly!