Stupid Question:
Does the 4.0 have an external ignition module?

I can't find one in the book.

It takes a little to start it in the morning but then it idles smooth, once it get's hot it missses & it is harder to start. Sometimes I push on the accelerator just a little & it starts quicker. I fugured it's the module getting hot. It runs smooth above 1100 rpm (in drive) but sitting @ a light it misses sometimes & rough (in drive).

Thanks,
RollBar

P.S. I changed the wires, TPS (throttle position sensor). Some say it's the O2 sensor but.....