Mostly present when least expected-not there all the time. Slacking off on throttle makes the sound go away.Sound is not metal on metal but more thuddering than grinding.Opening drivers door while driving detects the sound under the vehicle about midships. Any ideas please?
Sounds like a u-joint in the drive line.
SOURCE: Clunking and grinding noise
My 2003 F150 Supercrew would not engage in 4x4, it ended up being the shifting fork in the front end, cost me $200.
SOURCE: '98 ford explorer a very
it could be your wheel bearing. if it sounds like a plain at take off thats it.
SOURCE: Idle and gear shifting 1987 celica automatic
I would suggest hat you replace the timing belt. The noise that you hear is the belt.
SOURCE: Automatic shudders on some gear changes.
This car has both options of auto transmission plus manual gear **** so the only reason it can shudder when the clutch is not fully released and thus takes some time, that's when it shudders, but on accelerating this will not happen cos the centripetal clutch has enough torque such that the clutch is pressed hard to the cam & therefore no shuddering. On cruising speed the probability of clutch slipping making the car shudder. Thus changing the clutch assembly ought eliminate this problem....sodeep
SOURCE: acceleration noise
Unless you are hearing an exhaust rattle of some sort, suggest higher octane fuel or check your timing.
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Whew....most of you guys are way off track with your suggestions. It turned out to be the retaining circlip holding the driveshaft in place in the transfer box. Just screw off the round plastic lug (about the size of a Kruger Rand) situated near the oil drainage plug on the transfer box and secure the circlip in place. Easy as that.
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