What is this annoying chirping noise? (video)
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Lexus IS
What is this annoying chirping noise? (video)
My 2009 e350 has had this very annoying chirping sound since I purchased it in early November. I was told by the previous owner that "some pulleys and belt were replaced", which was verifiable by the shop she had the work done at. Im not sure of exactly what was done as my notes on the car are at my desk which I am away from at the moment. I have attached a short video of the car today. Cold whether or not the car makes the same noise. What could this be?
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Lexus IS
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I replace two idler pulleys and serpentine belt on my '09 E350 with 90,000 miles. The pulley and spring on the tensioner seemed OK so I left it as is. Started her up and the new belt squeaked like crazy as it went around the tensioner.
Belt alignment was perfect. Did some searching and pretty much everyone said to replace the tensioner. The Gates branded one from Amazon was an exact match for the one on the car (it was a Gates that was factory installed).
Success - squeak disappeared.
Belt alignment was perfect. Did some searching and pretty much everyone said to replace the tensioner. The Gates branded one from Amazon was an exact match for the one on the car (it was a Gates that was factory installed).
Success - squeak disappeared.
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The aux idler above the alternator wears the quickest out of all. Commonly can seize and break, I ALWAYS replace that one every 80k miles. Turn the tensioner pop the belt off and spin that idler, you'll likely hear its bad. Do it before it breaks off and leaves you stranded.
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FCPeuro has the parts and they come with a lifetime warranty. Otherwise I'd get the parts from rockauto which has the continental kit with both pulleys, tensioner and belt for around $120. I'd do it all at the same time as they all have a history of failing at some point. You could even throw in a new thermostat while you're at it as those are also known to fail and you have to take the pulley off anyway to replace the thermostat.
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Originally Posted by cetialpha5
FCPeuro has the parts and they come with a lifetime warranty. Otherwise I'd get the parts from rockauto which has the continental kit with both pulleys, tensioner and belt for around $120. I'd do it all at the same time as they all have a history of failing at some point. You could even throw in a new thermostat while you're at it as those are also known to fail and you have to take the pulley off anyway to replace the thermostat.
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Lexus IS
Here is what I know.
10/2018-Water Pump, Serp Belt, Driver Belt, Pulleys - replaced as car broke down while driving. - INDY SHOP
10/2017- Battery Replaced with Bosch Battery- INDY SHOP
4/2017- 130k Service, All Pads Replaces, Coolant Leak found, sealed. -MB DEALER
12/2016- 120k Service, Wiper replaced, idler Pulley + Belt replaced- MB DEALER
Hmm.. Why the noise if these pulleys seems to have all been replaced. I noticed one of the pulleys is silver and rusty looking.. doesn't look new to me?
10/2018-Water Pump, Serp Belt, Driver Belt, Pulleys - replaced as car broke down while driving. - INDY SHOP
10/2017- Battery Replaced with Bosch Battery- INDY SHOP
4/2017- 130k Service, All Pads Replaces, Coolant Leak found, sealed. -MB DEALER
12/2016- 120k Service, Wiper replaced, idler Pulley + Belt replaced- MB DEALER
Hmm.. Why the noise if these pulleys seems to have all been replaced. I noticed one of the pulleys is silver and rusty looking.. doesn't look new to me?
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Originally Posted by loudbmw
Does the rusty pulley look like this?
https://www.amazon.com/Gates-38319-B...ype=automotive
If so - they didn't replace the tensioner/pulley assembly and is likely the cause of your chirp.
Lou
https://www.amazon.com/Gates-38319-B...ype=automotive
If so - they didn't replace the tensioner/pulley assembly and is likely the cause of your chirp.
Lou
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At this point it could be anything....from pulley wheels (my guess) to a bearing in the water pump. Save yourself the aggravation and take it to an Indy shop or MB dealer and get it diagnosed.
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Update: had a mb tech look at the car and he immediately pointed out the tension is shaking back and forth, not normal. Suggests replacement. Belt is also slowly shredding. I found a nice pdf on here that makes the job look easy. Few questions.
Where can I get tools needed?
Can I use a tensioner from amazon or auto zone? Same question for belt..
Where can I get tools needed?
Can I use a tensioner from amazon or auto zone? Same question for belt..
