4l80 shifting issues

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Jun 21, 2015 | 07:51 PM

jimmyg

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4l80 shifting issues

Ok so I had a local shop rebuild my 4l80 and install a transgo2 kit. After 1000 miles something is just off the shifts are soft even if I max out line pressure. Doesn't really make a difference . Changed controllers same ****. line pressure seemed low what could cause this? Cross leak? Epc ? Used to shift nice and firm. any idea? Any help is apprec

Jun 21, 2015 | 08:29 PM

Ferocity02

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DId they drill out the spacer plate at all? Higher pressure wont help if the holes in the plate are too small.

Jun 21, 2015 | 08:43 PM

jimmyg

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I asked him that and he said he did . What would cause low pressure? What would leak?

Jun 22, 2015 | 06:27 AM

JRENIGAR

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Since it originally worked great Id say maybe the vb bolts or accumulator bolts might have worked themselves loose.

Jun 22, 2015 | 07:07 PM

jimmyg

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I'm hoping it is something easy . I just wish I had the knowledge to fix it my self.its kind of hard to go back on the guy because the trans does work.

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