Ford falcon 5R55S AUTO slips cold
Hello . We have a problem with a 5R55S Transmission [ford]. Vehicle came in with water in fluid. We rebuilt trans all new frictions ,seals ,solenoids new valve in pump. Fitted new cooler. After two weeks vehicle came back . Complaint was slip when cold on heavy throttle mostly noticeable in 1st,2nd and 3rd.Trans drove well when hot. We checked main line presure at the port on left side . Presure was correct at idle and stall with good rise on part throttle. We removed and dismantled trans we found small bolt that goes into centre suport had been left loose and rear clutch which is feed through centre support was badly burnt .we also dismantled and checked valve body and gaskets all was ok .Reassembled and refitted trans .Fault was exactly the same . Even though we found centre support was loose this did not correct fault. Vehicle drives good hot . We also checked filter pick up height from bottom of pan , and over filled with fluid but this made no difference.
We would appreciate any sujestions that would help us find the fault.