Pet67 Posted January 9, 2011 Share Posted January 9, 2011 New here but have picked up some good hints. I have a 2003 RX300 with the 300 6 banger. It has a high pitched metalic sounding noise which is most notable when first started. It seems to be coming from the front of the engine (belt area). Anyone else encounter such a symptom? So far the engine works fine but what sort of trouble am I in for, if any? Quote Link to comment Share on other sites More sharing options...
code58 Posted January 11, 2011 Share Posted January 11, 2011 You didn't say how many miles on the RX. That definitely sounds like a bearing going. Could be the W/P, or the upper idler pulley or the lower tensioner pulley. You CAN tell which one it is with a mechanics stethoscope (would need to remove the FULL plastic cover that covers the T/B and the other rotating parts in that area. (There will be 2 covers total for that area.) My GUESS is that it's the lower tensioner pulley because that's the only bearing'd part with a single row of bearings, both of the others have a double row of bearings and are less likely to throw ALL the grease off and run dry. I have had experience with this very type of noise that goes away in a few seconds when the bearing warms a little, but the balls are bone dry. If you don't have the tools, experience or mechanics stethoscope, take it to a professional or just change the 2 idler/tensioner bearings. They can be purchased online (original equipment) for a small fraction of the dealer price. It COULD be the water pump but my guess is the other 2. I wouldn't delay repair though! Quote Link to comment Share on other sites More sharing options...
Pet67 Posted January 11, 2011 Author Share Posted January 11, 2011 You didn't say how many miles on the RX. That definitely sounds like a bearing going. Could be the W/P, or the upper idler pulley or the lower tensioner pulley. You CAN tell which one it is with a mechanics stethoscope (would need to remove the FULL plastic cover that covers the T/B and the other rotating parts in that area. (There will be 2 covers total for that area.) My GUESS is that it's the lower tensioner pulley because that's the only bearing'd part with a single row of bearings, both of the others have a double row of bearings and are less likely to throw ALL the grease off and run dry. I have had experience with this very type of noise that goes away in a few seconds when the bearing warms a little, but the balls are bone dry. If you don't have the tools, experience or mechanics stethoscope, take it to a professional or just change the 2 idler/tensioner bearings. They can be purchased online (original equipment) for a small fraction of the dealer price. It COULD be the water pump but my guess is the other 2. I wouldn't delay repair though! Thanks Much. You sound "spot-on". I will go as far as my experience and tools will allow. Plus it is winter here in Canada. A little chilly for the "back-yard" mechanic. Quote Link to comment Share on other sites More sharing options...
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