started to run rough and now has stopped running

As it has gotten colder out my 86 gmc suburban has started to run rough and now has stopped running all together i am getting spark as it will turn over and run for a short time. any sort of advice would be much appreciated. thanks

i have recently(within a month or two) replaced spark plugs and wires, cap and rotor, ignition coil, oil and filter.

the suburban will start up for a few seconds occasionally with a very low idle and the shut off and before it stopped running i was having problems with it running very high rpms as it has gotten colder