Strange rattle noise during acceleration
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Driver
Joined: Jul 2007
Posts: 136
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From: Rhode Island
Strange rattle noise during acceleration
I posted about a three weeks ago with the same problem. Took it to the dealer, drove with the technician and the diagnosis was the mufflers. Lexus felt there was debris within the muffler. They were both replaced under the warrentee. The noise really never disapeared. It is very evident going uphill. Was not there during a recent rainfall....pretty weird. Anyone have any ideas?
Rookie
Joined: May 2007
Posts: 73
Likes: 0
From: FL
I had a oddball suspension rattle(i know it was under accel but the suspension squats so it could be) that ended up being lack of lubrication for the sway bar bushings. This could be the case because water can act as a very temporary lube. Also is it coming from the rear or the front. Also is it from full throttle or half throttle. Any info will help
Let me know, Allen
Let me know, Allen
Thread Starter
Driver
Joined: Jul 2007
Posts: 136
Likes: 0
From: Rhode Island
Allen,
It is comming from the front. Low to about 3k rpm. It's not loud but noticable. I intially thought it was a belt. The tech drove it with me and opened the door during acceleration and thought it was the muffler. It almost sounds like knocking. I use premimum gas. Thanks.
It is comming from the front. Low to about 3k rpm. It's not loud but noticable. I intially thought it was a belt. The tech drove it with me and opened the door during acceleration and thought it was the muffler. It almost sounds like knocking. I use premimum gas. Thanks.
Can you feel the rattle in the car or just hear it?
Have you check all your heat shields for the exhaust?
If one is touching the exhaust you can just take a broom handle and bend it back up, if it's loose just tighten the mounting points with a wrench.
Have you check all your heat shields for the exhaust?
If one is touching the exhaust you can just take a broom handle and bend it back up, if it's loose just tighten the mounting points with a wrench.
Pole Position
Joined: Jan 2007
Posts: 300
Likes: 0
From: Wai'anae, Hawai'i
One of the rattles I had was due to a heat shield. I used a constant torque clamp from a diesel charge air cooler. Wrapped it around the heatshield & exhaust tughtened it up... no more rattle. Mine would rattle from around 1000rpm to 2300. Might be worth a shot.
Right on the money
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