~~Help, I'm scared~~
Thread Starter
Driver School Candidate
Joined: Aug 2008
Posts: 6
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From: PA
~~Help, I'm scared~~
Just yesterday when I started the GS300 the loudest knocking noise seemed to be coming from the heart of the engine. After a few seconds I just turned it off. I removed the top cover thinking maybe a spark plug wire was missing but after I restarted the knocking seemed to gradually dissappear. I drove it and the noise is gone. The engine has 86000+; what happened? Should I get it checked?
I checked the oil level and it appeared maybe a pint low. That shouldn't have been a factor.
I checked the oil level and it appeared maybe a pint low. That shouldn't have been a factor.
Last edited by dakamabo; Aug 20, 2008 at 03:15 PM.
Lexus Test Driver
Joined: Mar 2007
Posts: 1,170
Likes: 2
From: New York
My car was sitting for four days in 40 degree weather and the same thing happened to me this morning... I immediately curled up in a fetal position and cried for a few minutes then check the oil (half quart low) and restarted. The noise gradually disappeared but now I'm worried...
Any Ideas? Should I still bother doing my plugs and timing belt or save the money because my engine may kick the bucket anyway?
Any Ideas? Should I still bother doing my plugs and timing belt or save the money because my engine may kick the bucket anyway?
Lexus Test Driver
Joined: Mar 2007
Posts: 1,170
Likes: 2
From: New York
I guess the only other person to have this happen to them has gone missing... now I'm worried... I may have the first signs of a bigger problem and I may go missing... oh no.. 
Last edited by djspawn00; Dec 9, 2008 at 09:29 AM.
It might be something else. On my car the accessory belt was getting worn down. I don't know why but it caused the power steering pulley to knock like crazy. It only did it for a little bit when on cold start then went away once the car idled for a bit. Once I replaced the belt and made sure all the pulleys were torqued down, the noise never came back.
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Lexus Test Driver
Joined: Mar 2007
Posts: 1,170
Likes: 2
From: New York
It might be something else. On my car the accessory belt was getting worn down. I don't know why but it caused the power steering pulley to knock like crazy. It only did it for a little bit when on cold start then went away once the car idled for a bit. Once I replaced the belt and made sure all the pulleys were torqued down, the noise never came back.
The engine mounts don't last forever, so expect to change them out every once in a while. They are made out of rubber so they WILL deteriorate. I would say once every 100-150k or every 6-8yrs depending on how you drive the car. There are people that go forever without changing the mounts and the engine response just gets sloppy because it has to torque against the bad mount first before the power is transferred to the ground.
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