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Old 07-22-2019, 07:42 AM   #1
mwcga
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Default Squealing noise upon start up EZGO Gas S4

Squealing noise upon start up.
2012 Ezgo Express S4 gas with Kawasaki engine. Background - I just purchased this cart from a gentlemen that only used it a half dozen times or so over seven years, it has very little use. All was well the first few weeks I had the cart, it has recently started to have a loud squealing noise when I push on the gas upon start up, it also will not move when its squealing. You can let off the gas and push it down again once or twice and it will stop making the sound and move. This seems to only happen when the cart is cold, after warming up it pretty much goes away. The drive belt looks brand new and the alternator belt is at the proper tension and in great shape as well. Any thoughts on what may be happening? I have a video of the issue but its too large to attach to the thread. Thanks for your help, Mark

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Old 07-22-2019, 08:06 AM   #2
LukeL
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Default Re: Squealing noise upon start up EZGO Gas S4

The starter generator belt is probably slipping when you first start. Watch that belt and see if that’s what’s happening. As the belts get old they slip more. I’ve found they have to be really tight not to slip as well.
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Old 07-22-2019, 09:52 AM   #3
mwcga
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Default Re: Squealing noise upon start up EZGO Gas S4

Luke, thank you for your response. I looked at the video I took and the smaller generator belt is not turning when I first try to start the engine. I wonder if its tension or if its because the belt is older and has had no use. I will try to tighten it and replace if needed.
Thanks again, Mark
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Old 07-22-2019, 10:49 AM   #4
LukeL
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Default Squealing noise upon start up EZGO Gas S4

Just had the same problem on a Club Car carryall. Replaced the belt and tightened it at the same time. (They’re really cheap.) That fixed the problem.
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Old 07-22-2019, 11:22 AM   #5
mwcga
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Default Re: Squealing noise upon start up EZGO Gas S4

I will follow your advice to replace and tighten. Thanks again!
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Old 07-22-2019, 06:55 PM   #6
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Default Re: Squealing noise upon start up EZGO Gas S4

I think you are hearing an electrical whine. Does it sound more like EEEEEEEEEEE?

If so, the battery voltage is low, or there is corrosion on your connections.
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Old 07-22-2019, 07:23 PM   #7
LukeL
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Default Re: Squealing noise upon start up EZGO Gas S4

He said it was loud. Usually an electrical whine wouldn’t be very loud...
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Old 07-23-2019, 03:25 PM   #8
mwcga
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Default Re: Squealing noise upon start up EZGO Gas S4

Update - I tightened the generator/starter belt and the sound went away. Fun reaching the bots on this one. I think that was it. If it happens again I think I will replace the belt. Sitting for almost 7 years may have impacted the belt and made it more prone to slip. We will see. Thanks again for your help!!
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Old 07-23-2019, 03:35 PM   #9
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Default Re: Squealing noise upon start up EZGO Gas S4

They can dry and harden over time. Just replace it next time you do maintenance and I would change the drive belt as well..
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Old 07-23-2019, 03:43 PM   #10
mwcga
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Default Re: Squealing noise upon start up EZGO Gas S4

I will take your advice, thank you!!
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