1993 blazer slows down to 0mph after reaching 25-30mph then won't accelerate

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Vehicle goes up to around 30mph then slows down to 0mph. While pressing down on the gas engine revs but car won't accelerate at all it stays at 0mph. I've put it on 1st 2nd and reverse and it still won't accelerate. After turning it off and on it won't accelerate at all but the engine does rev. If I have it off for around 5-10min then turn it on,same thing happens. Goes up to around 30 then slows down and won't move at all. I had the transmission filter cleaned and it worked fine for a day and during the night it started doing it again. It sounds like It has a vacuum leak under the fuel injectors. But it would still run fine before.

How long has your 1993 Chevrolet S10 Blazer had this problem?

Around a week