IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

2010 IS250 - Weird Engine Sound After Cold Start

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Old 03-14-16, 06:13 PM
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joshua28
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Default 2010 IS250 - Weird Engine Sound After Cold Start

Anyone know what the problem is? Started hearing this after cold starts last week. Thanks.

Old 03-14-16, 07:43 PM
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MWIS350
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That's little loud. How the car drive?
Old 03-14-16, 07:58 PM
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joshua28
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Originally Posted by MWIS350
That's little loud. How the car drive?
Drives fine. Sound goes away after a while.
Old 03-14-16, 08:03 PM
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MWIS350
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If no engine code and car drive fine I wouldn't worry too much.
Old 03-15-16, 06:43 AM
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Soledad
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I'd guess a belt or pulley. Go get you about 3 feet of 1/2" or 3/4" heater hose from Autozone or car parts store and use that has a mechanics stethoscope to pinpoint the noise being very very careful around the moving parts when you do. Almost sounds like a pulley bearing going bad. Or it could just be a spot on the belt or one of the pulleys that needs a little roughing up with some sand paper or emery cloth.

Last edited by Soledad; 03-15-16 at 10:12 AM.
Old 03-15-16, 01:57 PM
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Gville350
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Sounds like a pulley or bearing about to go, AND since it appears to be near the front of the motor I'd definitely be looking at the water pump as being the culprit. These water pumps are notorious for going out; heck, mine did at only 27k miles! The alternator pulley or ALT clutch is also know to be faulty.
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