GM / General Motors: 93 corsica help

I m scractching my head on this one when the temp out side is over 0c
32f the car runs fine but as soon that the temp drops below 32f it
runs ruff and stall everywhere no matter whats the car temp is i
replace the plugs and wires gas filter pcv valve ect still no
luck.. does anybody have any idea what could cause this??
thanks in advance Mark 1993 corsica
3.1 litre

could be the computer.
"mark" <com> wrote in message
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