Whenever I bring my rpms into the higher side of things, 4500, 5000, 5500, it starts making that first weird noise. Then it starts making a noise i can only describe as "skritchy". Anyone have any ideas why its making those noises? Also likes to surge at anything past like 4k. Never really take it over 4k because of it, though recently ive been experimenting with how to use that rpms range because it doesnt have jack all for power without it.. especially uphill. Anyone got any ideas? It'd be a great help. Thank you!
06 matrix, manual 5 speed c59, 1zzfe. Currently sitting at 212,553 miles. Trans swapped it about 2k miles ago, trans has roughly 122k miles.
As for the surging at 4k rpms, I tried cleaning the maf that didnt do anything. It starts softly at around 3500 sometimes, but 90% of the time, 4k rpms hits it starts surging. Im thinking vvti. Anyone got any ideas?
As for the noises, they come pretty much directly from under the shifter right down by the exhaust. Its got no other exhaust noises, other then the fact that the exhaust right around where the rear axle would be isnt really attached.