Help Choke motor sometimes has power
88 YJ. The engine starts easy some times, hard others. So far three times this scenario has happened. Drive for about 20 minutes after engine is completely warmed up. Before driving, the diagnostic port (from 258 primer)for choke has 12V and sometimes the wire to the choke itself does. After 20 minutes or so it runs rough and stalls. Choke is closed and won't stay open. Put a meter on the port tonight and the voltage was jumping all over and the wire to the choke had 0.2 volts. I have oil pressure and the guage seems to work. It runs well for a while (20-30 minutes) and then it starts to gag and stall. I'm going nuts! Anyone? Can you jump a wire from some other source to give the choke motor juice?