awful noise
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8th Gear
Joined: Mar 2006
Posts: 8
Likes: 2
From: Milton
awful noise
Anyone had this happen with their 2nd gen is250awd? Car was backed out of the driveway, brakes would not slow it down. I was not the one driving nor was I home. When I got home I took it out for a quick spin but did not notice anything. Did notice a sun glasses case in the foot well so just thought it got stuck under the brake pedal. Checked the doorbell cam and shocked when I heard this. Any input appreciated.
Its a 2007 IS 250 AWD, FSport intake, lowering springs and shocks are the only modifications.
Its a 2007 IS 250 AWD, FSport intake, lowering springs and shocks are the only modifications.
My first wild guess the starter didn't disengage hitting the flywheel.
Don't jump to conclusions yet.
How many miles does the car have?
When is the last time it was serviced. Also what parts were changed if any.
Don't jump to conclusions yet.
How many miles does the car have?
When is the last time it was serviced. Also what parts were changed if any.
Last edited by MikeFig82; May 19, 2022 at 06:12 PM.
My only other thought would be a failing ABS module. Though not sure if it would squeal that much. Since the driver at the time had no control over the brakes. Search on bad ABS accumulators.
Last edited by MikeFig82; May 20, 2022 at 11:01 AM.
Racer
Joined: Mar 2004
Posts: 1,402
Likes: 117
From: Colorado
From experience with teaching people how to drive, that is definitely the sound of a car being put into park while it was still moving.
The way how that racket starts higher in pitch, and then slows down right before the car violently stops and lurches back and forth, is the parking pawl grinding against the locking gear and then engaging as it slows enough to allow it to lock into place.
The only other thing that could make a sound THAT loud and THAT harsh would be some sort of catastrophic gearbox failure or something, and if the car drives fine now, you can rule those out.
Can you back the video up and see if the car was actually started? Not trying to sound insulting to whoever was driving, but It looks to me like someone didn't start the engine on accident (being that you can't hear the tell tale IS250 injector clattering) probably used up the vacuum reserve in the booster, and after hitting the brake pedal a few times with no result, they just threw it into park in a panic.
The way how that racket starts higher in pitch, and then slows down right before the car violently stops and lurches back and forth, is the parking pawl grinding against the locking gear and then engaging as it slows enough to allow it to lock into place.
The only other thing that could make a sound THAT loud and THAT harsh would be some sort of catastrophic gearbox failure or something, and if the car drives fine now, you can rule those out.
Can you back the video up and see if the car was actually started? Not trying to sound insulting to whoever was driving, but It looks to me like someone didn't start the engine on accident (being that you can't hear the tell tale IS250 injector clattering) probably used up the vacuum reserve in the booster, and after hitting the brake pedal a few times with no result, they just threw it into park in a panic.
Last edited by ExiledWolf84; May 20, 2022 at 05:33 PM.
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From experience with teaching people how to drive, that is definitely the sound of a car being put into park while it was still moving.
The way how that racket starts higher in pitch, and then slows down right before the car violently stops and lurches back and forth, is the parking pawl grinding against the locking gear and then engaging as it slows enough to allow it to lock into place.
The only other thing that could make a sound THAT loud and THAT harsh would be some sort of catastrophic gearbox failure or something, and if the car drives fine now, you can rule those out.
Can you back the video up and see if the car was actually started? Not trying to sound insulting to whoever was driving, but It looks to me like someone didn't start the engine on accident (being that you can't hear the tell tale IS250 injector clattering) probably used up the vacuum reserve in the booster, and after hitting the brake pedal a few times with no result, they just threw it into park in a panic.
The way how that racket starts higher in pitch, and then slows down right before the car violently stops and lurches back and forth, is the parking pawl grinding against the locking gear and then engaging as it slows enough to allow it to lock into place.
The only other thing that could make a sound THAT loud and THAT harsh would be some sort of catastrophic gearbox failure or something, and if the car drives fine now, you can rule those out.
Can you back the video up and see if the car was actually started? Not trying to sound insulting to whoever was driving, but It looks to me like someone didn't start the engine on accident (being that you can't hear the tell tale IS250 injector clattering) probably used up the vacuum reserve in the booster, and after hitting the brake pedal a few times with no result, they just threw it into park in a panic.
Good observation. With that said, it seems like it had to be in rewind to accelerate to a point of Not being able to go into park.
I'm going with, engine running, high idle, tossed into rewind, accelerated quick, threw it into park, but none of that explains the loss of brakes and/or not using brakes.
Strange indeed.
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Yikes, I'd hate to hear that from ANY vehicle! But like others commented on, sounds like it could have been thrown into PARK while moving? Just test it out and try to duplicate that situation and insure it was just operator error.
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