Clinking sound when pressing gas pedal
#16
Lead Lap
Thread Starter
Here is the noise my car makes. Each time you hear a clinking noise, I am lightly tapping the gas pedal (car is coasting). A second clinking noise can sometimes be heard when I release the pedal. For whatever reason, the sound is more clear near the console rather than down in the footwell.
http://youtu.be/Z9aXLaYUuMg
http://youtu.be/Z9aXLaYUuMg
#17
Lexus Test Driver
Sounds a lot different than mine. Maybe a u-joint on the driveshaft at the back of the transmission? That wouldn't really make much noise over bumpy roads though. How about a suspension part that is torqued when you throttle? Or maybe something loose with the shifter linkage? I just ordered a new front exhaust pipe, we'll see if that solves my problem.
#18
Lead Lap
Thread Starter
I got my air suspension swapped out for springs and shocks in October, so maybe. It has to be something tied into the gas pedal/acceleration which stumps me.
#19
Instructor
iTrader: (16)
Here is the noise my car makes. Each time you hear a clinking noise, I am lightly tapping the gas pedal (car is coasting). A second clinking noise can sometimes be heard when I release the pedal. For whatever reason, the sound is more clear near the console rather than down in the footwell.
http://youtu.be/Z9aXLaYUuMg
http://youtu.be/Z9aXLaYUuMg
#20
Lexus Test Driver
Any of you guys figure out those noises? I'm having my exhaust heat shields removed and possibly replacing the pipe next Friday, hopefully that fixes my noise.
#22
Lexus Test Driver
I just had the heat shields removed from my front exhaust pipe. The pipe didn't appear to have any holes in it. On the way home I could still hear a noise, although for some reason it didn't sound as loud, maybe it was just my perception, but the noise was definitely still there. I don't have a clue now what is causing this noise. It is getting more noticeable too at lower speeds and just normal driving. Basically a tinny, clunky, pinging noise similar to engine knock. Plus when the car has been sitting overnight and I go to start it there's a nasty metal-on-metal grinding sound that occurs right as the engine fires, it lasts for a second. Imagine if there was no oil in the motor; that's what it sounds like. This sucks.
#23
Lead Lap
Thread Starter
I just had the heat shields removed from my front exhaust pipe. The pipe didn't appear to have any holes in it. On the way home I could still hear a noise, although for some reason it didn't sound as loud, maybe it was just my perception, but the noise was definitely still there. I don't have a clue now what is causing this noise. It is getting more noticeable too at lower speeds and just normal driving. Basically a tinny, clunky, pinging noise similar to engine knock. Plus when the car has been sitting overnight and I go to start it there's a nasty metal-on-metal grinding sound that occurs right as the engine fires, it lasts for a second. Imagine if there was no oil in the motor; that's what it sounds like. This sucks.
Here's what it sounds like:
http://youtu.be/1nta5dJdHk0
#25
Lead Lap
Thread Starter
I forgot the name but it's right of center near the front of the engine and you have to remove the plastic cover to see it. I think it says something like VWI actuator on it.
#26
Lead Lap
Thread Starter
I have been noticing that when I start my car after it has been sitting for a while, it initially revs up to 1800rpm before settling down closer to 1200-1400rpm. When the car is warmed up, it starts under 1000 rpm. When it initially hits 1800 rpm for a second is when I hear the grinding noise.
Does anyone else's car initially rev to 1800 rpm in the mornings?
Does anyone else's car initially rev to 1800 rpm in the mornings?
#28
Lead Lap
Thread Starter
I am fairly certain the the problem is related to cleaning my throttle body. I have read and talked to others experiencing similar sounds right after cleaning it. I think the clinking sound may be the butterfly valve and the high revving sound has something to do with the TPS which is on the throttle body.
#30
Lexus Test Driver