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A torque converter shudder is a symptom not a cause. You need to find out what is causing the shudder first before you start throwing parts and money at it.

There are several things that can cause TC shudder, injectors, pump timing, and even transmission oil. I would say that about 80 % of lthe TC shudder i have personally diagnosed have been ATF oil related. I have also seen injectors cause shudder and in the 24 valve cases the fueling boxes & timing combinations have even caused shudder.

When a TC shudders it is a simple case of the dampner springs within the TC opening and closing. As they are opening and closing there is not enough hp to keep the springs collapsed and too much power to keep the springs (open) for lack of a better term. If your engine is not running smoothly it can also cause a TC shudder.

For assistance with these issues as it applies to your application please feel free to call and discuss in more detail.

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Bill Kondolay
DTT Tranny Builder