Engine Knocking
#1
Pit Crew
Thread Starter
Engine Knocking
Hey guys,
Recently my 92 SC300 has been knocking. I don't understand why becuase the car has less that 100K miles on it. All I know is that I took the driving belt of and started the car and the knocking went away. This tells me that whatever is knocking is run by the driving belt (water pump, or power steering). Which one do you think is the the reason for the knocking and how much will replacing it cost?
Recently my 92 SC300 has been knocking. I don't understand why becuase the car has less that 100K miles on it. All I know is that I took the driving belt of and started the car and the knocking went away. This tells me that whatever is knocking is run by the driving belt (water pump, or power steering). Which one do you think is the the reason for the knocking and how much will replacing it cost?
#3
Lexus Champion
iTrader: (2)
Well, if you took of the accessory belt and the knocking went away, it could be one of a few things. It could be that the engine is happy without any load on it at all. Did you throttle it at all? There have been others on the board who have noticed that the other accessories sometimes give off noise that can be mistaken for engine knock. Manually turn each pulley and see of one doesn't turn smoothly. While they all could potentially be the culprit, the tensioner pulley has been pointed out more than once. I had to replace mine. Look up tensioner pulley to find out which bearing you should use. I don't remember off the top of my head. It is a quick $5 part that can be swapped out in under 30 minutes. Since the price is so low, I would start there.
#4
Pit Crew
Thread Starter
Originally Posted by T0ked
Well, if you took of the accessory belt and the knocking went away, it could be one of a few things. It could be that the engine is happy without any load on it at all. Did you throttle it at all? There have been others on the board who have noticed that the other accessories sometimes give off noise that can be mistaken for engine knock. Manually turn each pulley and see of one doesn't turn smoothly. While they all could potentially be the culprit, the tensioner pulley has been pointed out more than once. I had to replace mine. Look up tensioner pulley to find out which bearing you should use. I don't remember off the top of my head. It is a quick $5 part that can be swapped out in under 30 minutes. Since the price is so low, I would start there.
#5
Lexus Champion
iTrader: (2)
Try replacing the PS fluid with some good oil. The SC300 uses Dexron II. I've been using Maxlife ATF and PS fluid in mine. Pump out what is in the reservoir and refill. It may buy you more time and give you an idea of what needs attention if it quiets down. If not, atleast you replaced the fluid! What did you spend $25 on? The entire pulley wheel? The entire tensioner? I fixed mine by buying a 6203RS universal bearing and replacing the one in the pulley. $5 and a hammer.
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madmax98
ES - 1st to 4th Gen (1990-2006)
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01-17-08 09:03 AM