4r70w rebuild question

bigal

Registered User
Transmission works ok under normal driving. however on WOT 1-2 hold until 5500-5800 and flares before shifting. 2-3 shift holds to 5800-6000 before shifting. Trans doesn't leak and was replaced by Ford in 98 or 99 per previous owner. My question is there a way to visually inspect trans to see if it needs to rebuilding. FYI trans is out of the car due to rebuilding motor (cracked head).
 
pull the accumulator springs and make sure none of them are broke

does the trans slip any as in neutral drops?
 
pulled pan and removed 1-2 snap ring, cover, spring between cover and Accumulator, but no spring between accumulator and case. Shouldn't there be a spring between accumulator and case?
 
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