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4l80 trans problem or tuning?

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Old 11-02-2011, 06:38 PM
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Default 4l80 trans problem or tuning?

just pulled my car apart so now is the time for me to pull the trans down if I need to. anyways my issue is after i go full throttle and the trans downshifts and get back into cruising the trans wont shift into overdrive for a while or lock the converter. do you think this is a tuning issue or do i have a solinoid going bad or something. if i stop the car and start going again trans shifts into OD fine. trans fluid looked very good fwiw.
Old 11-02-2011, 08:30 PM
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Its difficult to say. I'd put a scanner on it and see what the PCM is commanding while experiencing the problem.
Old 11-04-2011, 04:20 PM
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anyone else have an idea?
Old 11-04-2011, 06:34 PM
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Check it with a scanner, it will lose OD because of certain engine, trans, or emissions codes.




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