Shuddering Transmission.
 

03 e53 4.4 with the 5hp transmission.

It happens at low rpms in any gear. Anyone know why? Dirty filter?

Thanks,

Brian

Are you sure? I get a shudder on wife's car under power. I'm pretty sure it's CV axle.


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Thanks, yeah, low rpm but under power. So it’s just when lightly pressing the gas peddle after getting up to speed. It’s like it can’t decide which gear to be in. I replaced the cvs last winter. And actually just reset one that popped out. Along with a new transfer case (has 111,000 miles) and front driveshaft.

No change in shudder tho. I suspect trans filter for some reason... just curious if anyone has resolved that problem before.

One possibility - it’s common for the torque converter lock-up clutch friction plate to wear and this allows torsional vibrations to develop in the driveline. Sounds a bit like driving over a cattle grid. If that is the issue, you can usually see the engine speed wavering (you need to look very closely at the rev counter needle as it’s only by a couple of hundred rpm) in sympathy with the noise.

Phil

Shuddering Transmission.
 

In my case the shudder is only under a fair application of power eg going up an on ramp.

The symptoms above (low power request, gear hunting), sounds a lot like the lock up plate grab/slip.

I can monitor input/output shaft speed with foxwell and would make it pretty obvious if the lock up plate isn't.