OK, I put a used 700r4 in my 90blaz. about 9 months ago. now the fluid came up missing out of it. no leaks,just gone? now im very confused i put new fluid in and now all the shift points are off. need a tranny guru to help
CK5
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Dissapearing Trans Fluid
- Thread starter Guss
- Start date
Check your t-case to see if it's overfilled.... Could be losing it out the back seal...
shift points are controlled by your TV cable.....
shift points are controlled by your TV cable.....
If your shift points are off your tv cable needs to be adjusted.
blazin_blazer
1/2 ton status
if its not going outthe rear seal, check you modulator their diaphram will bust or crack and it will allow the engine vacuum suck trans fluid up that line and burn it, therefor looking like its disappearing, but it would cause it to smoke white smoke ,depending how bad the diaphram is busted depending on how much smoke you get.
90v1500
Registered Member
700R4 doesn't have a modulator... that's TH350 or 400... probaobly rear seal... it's a common problem.
mike reeh
1/2 ton status
agreed... check the T-case 
blazin_blazer
1/2 ton status
hmmmm
i did not know that, thank you teacher
90v1500 said:700R4 doesn't have a modulator... that's TH350 or 400... probaobly rear seal... it's a common problem.
i did not know that, thank you teacher
thanks guys as you said the problem with shift timming was tv cable have to readjust every two days or so, so ill replace payday the fliud isnt pulling the diapearing act now put prob. 400 miles on since refill still at same level so im scare to check transfercase. the fluid does smell burnt already is that from the tv cable comming undone every once in a while
88Silverado
1/2 ton status
Takes 2 minuets to check the fluid in the xfer case. Just put a catch pan under the back of the case, remove the top fill nut (make sure your not lying directly underneth it) and if excess comes out, its leaking thru the seal. I drain the excess from mine every 2nd oil change and add as needed to the trans. If your trans fluid is brown and smells burned, I'd flush it and hope its not too late 
