weak spark will do that also. a cold start puts the most stress on the ignition system. look for white flashover on the bracket on the coil. seeing that means spark is taking the path of least resistance. old or fouled plugs, cap, rotor wires, etc.

i forgot. a weak crank sensor can do that also. need to scope it and watch the wave form. should see 1 to 3 volts ac as it reads the teeth on the ring gear. lower than 3 ac will not generate enough signal for the ecu to use. hope that's not it, m116/117 crank sensors have been nla for years now.