LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

How to tell if water pump is bad??

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Old 02-26-07, 10:37 PM
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DCLexus
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Default How to tell if water pump is bad??

I've noticed a squeaking noise coming from the front of my car. It sounds like its directly behind the radiator/front of the engine. The belt dosen't look bad, but it's probably the original. Could the belt be bad? Could the squeak be a bad pulley bearing or is it a sign that the water pump might be going? The car has 45k miles on it.

Thanks.
Old 02-26-07, 11:40 PM
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PureDrifter
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prolly dead fan bearing or bracket.
Old 02-27-07, 08:07 PM
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skperformance
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water pump starts to leak when it is bad through a weeping hole in the bearing.
Old 02-28-07, 09:13 AM
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DCLexus
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I don't see any leaking water. I guess thats a good sign. Maybe it's the fan bearing/braket as Puredrifter suggested. Is this a common problem?
Old 02-28-07, 12:15 PM
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I've only had the car for about a month, and it didn't make the noise when I bought it. However, over the weekend I drove through a very dusty wind/storm that covered the car/engine with dust. After that I noticed the squeak. Could the dust have gotten into the fan braket bearing? Or maybe the drive belt tensioner?
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