Pop noise upon straight line acceleration
#1
Pole Position
Thread Starter
Pop noise upon straight line acceleration
Hi everyone
my 08 gs350 awd is making a pop noise when I accelerate (even lightly). I can feel it pop again when I let off gas sometimes too. Not sure what could it be.... Any suggestions or next step would be appreciated!
my 08 gs350 awd is making a pop noise when I accelerate (even lightly). I can feel it pop again when I let off gas sometimes too. Not sure what could it be.... Any suggestions or next step would be appreciated!
#2
Have someone rev the engine while you have the hood open. May be able to get a better idea of where the noise is coming from, or if you don't hear the noise, that would suggest that the noise isn't coming from the engine.
#4
Pole Position
Thread Starter
Seems to be in the front. It's definitely not the engine...
i think it may be the transfer case or differential.... It really only happens as soon as I hit the gas.... Maybe 50% of the time.
i think it may be the transfer case or differential.... It really only happens as soon as I hit the gas.... Maybe 50% of the time.
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#9
Probably one of the engine mount brackets or insulators, or transmission mount like ibidu1 said. When engine load changes (stepping on or letting off gas), it will experience a change in torsional force, which means the loads experienced by the mountings and insulators will change, and metal can make noises from changes in applied load
Probably wouldn't be a bad idea to get it checked out in any case
Probably wouldn't be a bad idea to get it checked out in any case
#10
Pole Position
Thread Starter
Thanks for the suggestions. yes it is looking to be a mount. Today, I held the brakes firmly and reved the engine both in D and R. The sound sometimes would occur when the transmission engages without even revving. The rules out CV joints as well as loose brake pads!
#11
Pole Position
Thread Starter
Ok now it's happening only when stepping on gas. It is a single click as soon as I step on gas. Doesn't happen once the car is moving.... Only when starting from a dead stop. If I feather the throttle, the noise won't appear. Sometimes it will click (single click) again after I let go of the gas. This is starting to look like mounts. How would you really check them?