410customs

Idahome

Joined: Wed May 2nd, 2018
Posts: 2165
Name: Jamie ... Occupation: Elevator Design Worlds Tallest Buildings ... Interests: Ranger Based Vehicles and OFFROAD ...
Reputation Points: 2165
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140K and 99.9% of owners = never been serviced
4r55e biggest issue is leaky separator gaskets
but can lead to bigger issues
Sounds like you have a converter lock up OR line pressure issue
Have you tried scanning live data to see what the PCM is commanding and when?
Check for manufacture specific (trans) codes?
____________________ I build custom RBV, specializing in drivetrain conversions, wiring, suspension and complete custom trucks
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