Question about 2006 Lexus Gs 300

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Motor click on a 2006 Lexus gs300

60,000 miles and car runs flawlessly but questioning an odd 3-second sound of "rattling" and then after that, the motor has a "clicking" sound when the car runs. Again, car fines fine and smooth but just want to see if its going to be a problem or just the norm for this car.

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  • Lexus Master
  • 45,552 Answers

Have the fault codes read .It sounds like detonation for the start and the click may be failing hydraulic tappets . depending on the regularity of the click. Is it in time with the revs or random Detonation is caused by the mixture firing before ignition and will do damage to piston tops.

Posted on Apr 21, 2013

  • Cashmusicnet Rivera
    Cashmusicnet Rivera Apr 21, 2013

    No lights are on so it seems like there is no problem but when the engine in running, there is a repeated "click click click click click" on idle. And possibily while driving. I can pitch your solution to my machanic or maybe ill video the problem in hopes we can get a better understanding of the sound cause when my mechanic first seen the car, he mentioned the sound and said "this just might be a "ticky" motor.

  • Bill Boyd Apr 22, 2013

    It may sound like a ht leak from a coil or ht lead Like a spark plug lead not fitted tightly and the spark is jumping to the plug. Checck plug coil packs or ht leads in the plug insulators or in the distributor cap. Motors are not just noisy and there is a reason for everything not considered normal.

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6 Suggested Answers

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Posted on Jan 02, 2017

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  • 1 Answer

SOURCE: all dash warning lights came

Hatterasnc,

You're alternator has gone bad and the vehicle was running on battery power. The "clicking" sound is your now dead battery that does not have enough power to turn over the starter. You might also want to check your power steering pump for leak. This is a know problem with early LS400s and will most likey be the cause of the alternator failure. I just dropped $1050.00 to fix the very same promblems you have.

Posted on Jul 21, 2008

  • 41 Answers

SOURCE: I have a 1998 Lexus LS400 with a clicking sound

You may have corrosion inside your battery cables or a loose connection somewhere.

If you have a voltmeter connect one lead to the POSITIVE post of the battery and the other to the POSITIVE post on your starter while you have a friend crank the engine
WATCH YOUR HANDS!

This is called a voltage drop test and you should see less than 0.5v on the multimeter while you are trying to start it, if you have high resistance (corrosion bad connections) you will see a higher voltage. 0.5v is the MAX you should see.

Do the same test on the ground side of the circuit, connect to the NEGATIVE battery terminal and the starter case, your voltage reading should be 0.1v or less

Posted on Feb 24, 2009

mkv0525
  • 358 Answers

SOURCE: My 1993 Lexus LS 400 won't start.

seperate problems. you starter is under intake manifold and is most likly the problem and the dash lights go bad on older lexus ls400's.would have to be replaced.

Posted on May 21, 2009

  • 18 Answers

SOURCE: 2000 Lexus ES300 - 45K

Are you sure this is a rattle or is it more of a creaking noise? I have a 2000 ES300 and had an issue when I would go over speed bumps and the noise would drive me nuts! However replacing the bushing in the top of the strut mount is expensive due to the labor involved.. Replacement of the strut or the bushing isn't necessary. Just open the hood, locate the strut housing and you ll be able to see the black rubber bushing in the middle. Obtain a can of Heavy Duty silicone aerosol spray and attach a straw to the spray tip. Using a flathead screwdriver wedge the screwdriver between the top of the bushing and the metal pushing the screwdriver all the way to the edge of the metal underneath the roof of the metal housing. Then pry the edge of the bushing away from the metal housing so that the top of the edge of the bushing exposed and stick the straw end of the silicone into the spot and spray generously. Only slight bushing movement will be obtained as the bushing is pretty stiff but it will be enough. Work your way around using this technique until you get the spray fully around the bushing 360 degrees getting it into the area between the edge of the bushing and the metal. Then spray the silicone onto the top of the bushing filling it all the way up until it spills over the metal. After it drains down, repeat again making sure you fill it above the rim of the bushing so it seeps into the area between the bushing and he metal housing (or frame) because this is where the rubbing is taking place that is creating that awful noise. Repeat on the other side and your done. The main goal is to get the silicone into the area between the metal and the bushing along the edge. This happens to be the way I was able to do it. This totally solved my problem and now the car is so quiet there aren't any knocking, creaking or rattling noises. This was a hard solution to explain without visuals, hope you can follow. This will work for sure. The Heavy Duty Silicone spray I used was manufactured by CRC and I bought it from Walmart.

Posted on Jul 22, 2009

  • 1 Answer

SOURCE: Lexus rx 300 Air suspension fault

No air or heat comes out of the floor vent

Posted on Aug 10, 2009

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~ quote??


May not be an issue. I owned a 93 lexus sc400 for 5 years and the whole time I had it till the car was distroyed in an accedent in april this year the lifters clicked from 146,000 to 212,000 miles. never caused a single problem. I was told by many mechanics to ignore it. just a thought

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