robert2423

Hey guys,
So lately i have been having this weird rattle when i go out to my car in the mornings. i put it in reverse back out my driveway, in this process when i start going backwards if i lift off the throttle after applying gas i hear what sounds to be a rattle/loud vibration coming from underneath the car/hood. Any one have an idea what the problem could be? i took it to Lexus they are blaming my ARK exhaust for a leak, and saying the exhaust is rattling under the car. But this has never happen before so i dont think the exhaust leak is the issue? He also said it could be its cold out but havent had this problem through the worst winter months only now. Thanks for all your help, i might have the sound on go pro ill upload soon.

robert2423

any ideas?

Phamkq

I have the same issue when I am on reverse or sometimes during idle.

robert2423

yeah dosent seem to be a common one... pretty annoying when the neighborhood hears my 50k car reversing and the brakes...

Phamkq

Hmm mine is actually from a Lexus fsport performance exhaust that I had installed, four different muffler shops and none could figure it out

nathantse

Sound clips?

I saw the quad tips, you put into the fsport exhaust. Looks nice

You have any sound clips of the rattle? I'm getting mine installed this week, gonna make sure they are aware of this "rattle".

Phamkq

Not yet bro, soon! It's only on my right side. The rattle honestly can only be heard inside the cabin. Can't hear anything outside but it bugs the hell out of me. There's a wierd sound usually after I exit the freeway and begin street driving and then again at the stop light or reversing. The sound LITERALLY only comes on after I exit the freeway driving. Must be a loose heat shield somewhere that four different muffler shops couldn't diagnose.

My right exhaust pipes also does sit lower than my left one, it came like that apparently

nathantse

Did this happen once you had modified the exhaust? Or was it always there ?

Have you taken this to the dealer? I'm getting mine installed by the Lexus Techs.

robert2423

my issue isnt an exhaust rattle... ill upload sound clips later today, i have a ARK exhaust not Fsport
note: its also weird it only does this when i do my wheel swap for the summer.

Phamkq

It happened after I installed the exhaust, my oem never had issue. Stealership wanted to charge me $350 just for diagnosing to find out the issue since they didn't install it.


I think we both may have to just get under a lift and start clamping everything with hose clamps

nathantse

lol, yeah I seen ppl use hose clamps.

I'll def address the issue when I get my fsport exhaust installed. The stock one has no problems either.

Aside from that, I hear ppl saying some the exhaust tips are not leveled? One hangs lower than the other.

robert2423

Hey guys,
So i was finally able to get a clip of the noise. I advise wearing headphones when watching this as it makes it easier to hear and single it out.
Let me know what you guys think to me this dosent sound like a exhaust leak/ rattle

robert2423

Is this similar to what you are experiencing?