wierd clunking noise from under the car when moving - Lexus IS Forum
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post #1 of 29 (permalink) Old 05-26-2004, 02:46 AM Thread Starter
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wierd clunking noise from under the car when moving

right after i turn on the engine and start the car moving in reverse or drive, the car make a slight (or sometimes loud) clunking noise that seems to be coming from either the brakes or the transmission. i cant tell because its subtle sometimes and frickin loud other times.

anyone else have this problem ? it seems to occur only within the first 5 minutes that i start the car.

btw, i have an 02 e shift.

thanks

eugene
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post #2 of 29 (permalink) Old 05-26-2004, 11:18 AM
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Sounds like you are talking about the brakes. If so, it is normal, Lexus uses a floating caliper desing. When you first depress the brakes, they make that noise.
All my lexus' have done it.

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post #3 of 29 (permalink) Old 05-26-2004, 07:21 PM Thread Starter
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hmm.. tested it out today.. im not even stepping on the brakes when this occurs. upon closer inspection it seems as if the car whirrs, sounds a lot like clunking though. this happend after i got the car moving in drive (about 4 seconds after it started moving forward)
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post #4 of 29 (permalink) Old 05-30-2004, 12:58 PM
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does this usually happen when you go to drive your car after it has sat for awhile?

does it happen when you put the car in drive and slowly drive off its a clunk and a bit of a "errr" noise?

does it also happen when you brake (this usually makes the "err" noise more noticeable/drawn out/speed up)

it sounds unsettling, but the general consensus is that this is a normal characteristic of this car.

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post #5 of 29 (permalink) Old 05-30-2004, 02:04 PM
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If you have had the car sit for a while then start it up and drive it, then it's the transmission. Completely normal. I have this as well.
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post #6 of 29 (permalink) Old 05-31-2004, 01:57 AM
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I have that same problom, Not sure if it is a problom.
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post #7 of 29 (permalink) Old 06-01-2004, 01:24 AM Thread Starter
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well, its pretty much as doncorleone stated.. sounds like shit but i guess it cant be helped.. thanks though
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post #8 of 29 (permalink) Old 06-03-2004, 02:27 PM
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I've had my used 2002 IS300 sportcross for about a month and have been concerned because I hear that eaxct thing. Usually after the car has been sitting for awhile. When I back out of my driveway in the morning for work I put the car in drive, go a couple of feet and "clunck". It's a hard sound to discribe. ZY
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post #9 of 29 (permalink) Old 07-04-2004, 07:14 PM
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Question too?

When I park on a steap hill or driveway and put on the parking break, I feel the car roll back about 1-2 cm and it makes a creek noise sometimes. I'm thinking its the breaks, but I just got the car in Feb'04. Is this just the type of breaks?
I try to pull the parking break harder but doesnt seem to help as much.
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post #10 of 29 (permalink) Old 09-28-2005, 10:01 AM
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Hi, I have purchase my used 02 IS for about 4 months now. I have exactly the same problem. I didn't occur to me that this noise would be a cause of concern when I bought it becase I was so excited about the car. Anyway I have taken my car to the dealership for this problem. After 3 hrs of waiting the service dept rep brushed it off as a brake problem. I wasn't satisfied so I checked with the sales rep who sold me the car and he was kind enough to test it out with me. He too reconized that this is abnormal and he had consulted their so call "master technician". Their conclusion was that it was the electrical system of the car calibrating, and that there is nothing that they can do about it. Again that left me unsatisfied but I had to leave due to all the time already wasted. Sorry for the rant but has anyone been able to find out further what the cause of this problem and the remedy may be? Thanks in advance to helping out.

Eric
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post #11 of 29 (permalink) Old 10-04-2005, 03:10 PM
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my 02 is having the same prob. i took it to the dealer, after 1 day they said it was normal, abs system clunk when u initiate the system. and there is nothing they could do to fix it.
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post #12 of 29 (permalink) Old 10-04-2005, 03:43 PM
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Mine has done that since day one. I just know it's normal. No worries.

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post #13 of 29 (permalink) Old 03-07-2006, 01:39 PM
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My '03 has been doing this since I remember...in the morning, backing up, and turning...clunkclunk!! I maybe get one more clunk on my first turn (depending on how fast I am trying to get to work)
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post #14 of 29 (permalink) Old 03-13-2006, 12:43 PM
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i always thought it was the u joint and it was not a big deal. like it's not used to going in the reverse direction so much so when you do back up, it just gives that noise. hard to explain, but i never worried about it
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post #15 of 29 (permalink) Old 03-18-2006, 10:10 AM
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OMG.. I thought I was the only having that problem. I have the same problem. I just recently bought an '02 IS300 at the dealership. Whenever I back out of my driveway I hear a clunck sound as well. Thats the first thine I noticed. I know I have a 30 day grace period with the dealership. So, I'l bring it up and I'll come back and let you know wat they said. Takecare guys.
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