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-   -   Belt Walking (https://www.ft86club.com/forums/showthread.php?t=144861)

scion fr-s 04-09-2021 01:16 AM

Belt Walking
 
Hello. I have belt movement. I replaced the two idler pulleys and the accessory pulley. I also replaced the tensioner pulley and brand new OEM belt. I still have belt movement. My next guess is replacing the alternator pulley. What I mean, is my belt walks side to side. Feel free to chime in. Maybe it is time to find a shop. ARG!!! TIA.

Turdinator 04-09-2021 01:18 AM

Does it jump a groove in the grooved pullies?

Ultramaroon 04-09-2021 02:31 AM

Do you have a supercharger?

scion fr-s 04-09-2021 03:52 AM

Forgot to mention that I put on a new belt and noticed the edges were starting to tear from the movement of the belt. I am starting to guess that my pulleys are not balanced, causing the belt to walk. No noticeable belt movement on the grooved pulleys. I notice belt movement on the tensioner pulley and idler pulleys since I have to readjust the belt before starting the car. I need to make a video and I am NA with bolt-ons. This is weird because when I had my FRS, I had no belt issues or movement. Freakin BRZ.

Project_1796 04-09-2021 04:05 AM

Quote:

Originally Posted by scion fr-s (Post 3421355)
Forgot to mention that I put on a new belt and noticed the edges were starting to tear from the movement of the belt. I am starting to guess that my pulleys are not balanced, causing the belt to walk. No noticeable belt movement on the grooved pulleys. I notice belt movement on the tensioner pulley and idler pulleys since I have to readjust the belt before starting the car. I need to make a video and I am NA with bolt-ons. This is weird because when I had my FRS, I had no belt issues or movement. Freakin BRZ.

Did you check the crankshaft harmonic balancer? is it OEM or aftermarket?

soundman98 04-09-2021 04:06 AM

There's 3 idler pully's, though it sounds like something else is not aligned correctly. Have you tried watching it on startup to see where it's jumping?

https://www.ft86club.com/forums/atta...1&d=1375708290

scion fr-s 04-09-2021 04:29 AM

Quote:

Originally Posted by Project_1796 (Post 3421361)
Did you check the crankshaft harmonic balancer? is it OEM or aftermarket?

I have not and an OEM crank pulley.

scion fr-s 04-09-2021 04:29 AM

Quote:

Originally Posted by soundman98 (Post 3421362)
There's 3 idler pully's, though it sounds like something else is not aligned correctly. Have you tried watching it on startup to see where it's jumping?

https://www.ft86club.com/forums/atta...1&d=1375708290

I called letter G an accessory pulley LOL.

Ashikabi 04-09-2021 07:53 AM

Bad bearing somewhere?

Sent from my ONEPLUS A5010 using Tapatalk

Tcoat 04-09-2021 07:58 AM

When you say you replaced the pulleys were the new ones stock or aftermarket?
Not sure from your wording but did you have movement before changing the pulleys?

Lantanafrs2 04-09-2021 11:52 AM

Sounds like a pulley isn't seated right

scion fr-s 04-09-2021 02:32 PM

Quote:

Originally Posted by Tcoat (Post 3421388)
When you say you replaced the pulleys were the new ones stock or aftermarket?
Not sure from your wording but did you have movement before changing the pulleys?

The new pulleys were OEM Subaru. The old pulleys showed signs of wear which is why I replaced them and yes I had belt movement before changing the pulleys.

scion fr-s 04-09-2021 10:58 PM

1 Attachment(s)
Thoughts?

soundman98 04-09-2021 10:59 PM

so it's not jumping teeth side-to-side, but is moving? should be able to see it attempting to move one place more than another.


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