Yet another E4OD shudder
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Cargo Master
Joined: Aug 2004
Posts: 2,899
Likes: 2
From: Lynnwood, WA
Yet another E4OD shudder
I first noticed it about a year ago, and it's getting more and more frequent. 
Questions:
a) what is causing it?
b) is there any additive that known to help with shudder?
c) what are the recommended and possible fixes for it?
I read that oil change with Mercon V is one -- I actually changed it not too long ago (~40k), so I'd like to try some additives first, and if they don't work, do another ATF change.
Vehicle has a little over 292k, mostly highway miles.
TIA
Questions:
a) what is causing it?
b) is there any additive that known to help with shudder?
c) what are the recommended and possible fixes for it?
I read that oil change with Mercon V is one -- I actually changed it not too long ago (~40k), so I'd like to try some additives first, and if they don't work, do another ATF change.
Vehicle has a little over 292k, mostly highway miles.
TIA
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
It depends on when the shudder appears. Just starting from a stop? During a shift? During torque converter lock?
I wouldn't use any additives.
Once again, that depends on when it is shuddering.
With 40k on the fluid it is due for a change. The anti-shudder additive wears out. You need to replace the fluid to get it back.
I wouldn't use any additives.
Once again, that depends on when it is shuddering.
With 40k on the fluid it is due for a change. The anti-shudder additive wears out. You need to replace the fluid to get it back.
Thread Starter
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Cargo Master
Joined: Aug 2004
Posts: 2,899
Likes: 2
From: Lynnwood, WA
It normally happens during acceleration, and very often on the same stretch of the road (at the end of a cloverleaf from I-405 to SR-520 eastbound) , and I think the car is going about 40 - 45 mph when it starts. Easing up on the accelerator usually stops it.
I do not know what exactly is making the noise -- it's kinda unnerving, though.
I do not know what exactly is making the noise -- it's kinda unnerving, though.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,739
Likes: 2,669
From: SE Florida
That could be the torque converter clutch. I recommend a complete fluid exchange using MERCON V and no additives.
Here's how I do it: Changing ATF Fluid in a E4OD and 4R100 transmission .: Articles
Here's how I do it: Changing ATF Fluid in a E4OD and 4R100 transmission .: Articles
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