I have a '95 4Runner Limited 4x4. I keep hearing some type of rattling noise coming from under the truck during acceleration and deceleration only. Seems like its coming from the driveshaft, however, I could not verify this just by looking under the vehicle while its stationary. Has anyone... Sep 05, 2016 · Does it do this during ANY acceleration, or only during strong acceleration? Either way, I safely bet it's a plastic or metal shield of a sort rattling because it's loose and power train vibration goes into it. So it should be investigated further. Preferably, with vehicle up on a lift and running, so that noise source can be spotted.

Re: Engine pinging/rattling on acceleration My truck started the pinging about a month ago, I switched the truck to synthentic oil about 8k miles ago but I don't think that was the cause. So two weeks ago I put a bottle of seafoam in it and filled it up with E85, knock went away completely, so next time I filled up I went back to gas, and so ...