jerks gets up to like 20 dies in reverse on 1993 Chevrolet Lumina

idles bad was working fine parked at work and when i got off now it seems like it aint getting the right amount off gas too air when i tried too take off it was jerking bad when i tried to go in reverse it just died my cousin thinks its the o2 sensor any one got any ideas

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1 answer 1 comment
i would have the mass air flow checked for proper operation.

Roy
thanx