98 4 cyl misses, spits, sputters when cold

[TPyles]

I have a 1998 Wrangler with a 2.5 4 cyl, 73000 miles. Real bad cold miss and backfired today after stomping on it and letting off. It hesitates and sputters until you feather the gas pedal. I am thinking fuel filter also, but what sensors could be bad? O2 maybee, and what about a coolant temperature sensor to the computer (not a thermostat)? Any ideas greatly appreciated. No trouble codes either.

[gtmud]

When was your last tune up (plugs,cap,rotor, fuel filter) if your sensors were the problem you should get a light.

[AAB]

I had the same problem until I chagned the plugs, cap, etc, etc. doesn't run perfect, but no more problems