Annoying rattling sound inside driver door

thenamesgeoff

Did you ever attempt the foam fix and make the DIY procedure? If so, could you link to it? If anybody else sees this and knows of a DIY guide, please advise! My window regulator has the infamous rattle but my Z is out of warranty now so it's either DIY or SOL

CyFi6

I wanted to provide some input on this because even my 2017 Z with less than 10K miles started to have the infamous window rattle. I was able to narrow it down to what appears to be a device that keeps tension on the cable used to drive the window up and down. It a spring loaded device with a 2 piece toothed ratchet mechanism.

When the window is moved upward, slack is created in the cable at the tensioner location and the spring keeps tension on the cable. When the window is moved downward the ratchet engages and allows precise movement of the window without letting the spring compress.

When the window is rolled all the way up pressure is removed from the ratchet gear and since it is free floating in there its loose and starts to rattle. I think this is more pronounced as the cable stretches which may be why a new regulator doesn't rattle but not long after will start to rattle. As soon as you start to move the window back down the ratchet re-engages and the noise goes away.

I ended up removing the ratchet piece of the gear entirely to get rid of the rattle. Alternatively you might be able to pack the inside of the mechanism with a thick grease to prevent the gear from rattling. Removing the ratchet in theory would make the down movement of the window less precise since the first initial movement of the regulator motor would be used to compress the spring, but I haven't seen any noticeable difference and the window still moves down and out of the way quickly when opening the door.

Its easy to take the tensioner apart, simply compress the spring and then undo the cable from the pulley marked with the green arrow. Once the tension is relieved from the cable the tensioner will come apart and you can remove the gear piece or coat it with heavy grease.

You will of course need to remove the glass and the regulator assembly to get to this since its behind the big metal panel in the door.

Hopefully this is helpful for someone. If anyone else can figure out a better way to prevent the free floating ratchet from rattling please chime in.

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ard978

appreciate the update. i can't see removing the glass and doing all that. i've done timing belts and stuff back in the day but the rattle just isn't annoying me enough at this point.

what about putting some sort of thin solid rubber tubing in the top of the window rack (i.e. where the upper edge of the glass fits into when the window is closed)

it would prevent the window from going all the way up but would still close enough to keep water out..... thoughts?



do you have to split the 2 metal sides of the door in order to get the glass out?

halonut

has anybody else tried this? and did it work? sounds like it is probably the cause & a good fix but I'd like to know if has worked for others.

Thanks!

halonut

I've got the infamous window rattle at fully closed & also have the equally infamous door (driver) that won't stay open. I have a new door stay on order & am pretty sure that I have to remove the regulator panel to get access to replace the stay...can anyone confirm? obviously I'd like to take care of both issues at the same time.

Thanks!