4r70w problem

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08-26-2012, 01:17 AM

dallas76

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4r70w problem

I just put a rebuilt 4r70w in my '97 expedition and it shifts good but in 4th gear when I let off of the accelerator it starts to shudder until it shifts to 3rd. It acts like it is freewheeling then catches on and off. My thoughts so far is that I don't have the digital transmission range sensor positioned right or the overdrive servo isn't working properly. Any help would be greatly appreciated.

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08-26-2012, 07:33 AM

Mark Kovalsky

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If the digital TRS wasn't adjusted right it could keep it from shifting to fourth, but it can't make it shudder. I'm guessing the overdrive servo, too.

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