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1999 F250 SuperDuty - 4R100 Trans Issues

Posted: Thu Dec 16, 2010 1:14 pm
by DARRELLS98
TRANS. HAS NO CODES HAS HARSE SHAFT INTO 3RD GEAR, 2ND & OD FIND THANKS DARRELL

Re: 99 F25 SD 4R100

Posted: Thu Dec 16, 2010 1:30 pm
by wbuxton
2 things come to mind. Broken accumulator spring and TCC locked during shift.

Re: 99 F25 SD 4R100

Posted: Thu Dec 16, 2010 1:34 pm
by brianp87
Ya id suspect lockup but im no where near an expert on trannies.

Re: 1999 F250 SuperDuty - 4R100 Trans Issues

Posted: Fri Dec 17, 2010 2:33 am
by steven kiser
how many miles? if mileage dictates this may be an r&r. i agree with william but will add, if it were me and i dropped the pan and found a debris pile i would yank it and put a jasper unit in it. we do a lot of power train work but have gotten away from rebuilding ourselves. years ago we'd tear into a transmission and repair it and what started happening was something else would crap out and suddenly i owned the transmission or lost a customer.

Re: 1999 F250 SuperDuty - 4R100 Trans Issues

Posted: Mon Dec 20, 2010 6:01 am
by fortknoxx
does or did this thing have a performance chip or shift on the fly programmer?

jasper has a monster trans for this beast.