1992 XJ6 Sovereign with 150k miles
I had a belt go and it cut through the wires on the CPS. While I was ordering the CPS, I decided to replace the coil, cap, rotors, wires and plugs. Put everything back together and the car ran fine for a few miles before it started missing. The high tension wire on the coil was sparking. I checked the insulation on both terminals and made sure they were secure. The car did the same thing - runs fine in the driveway, on the road for a few minutes before it starts missing again.
I checked the coil wire and the resistance is a 4.5 k-ohms. The coil has a primary measurement of .8 ohms and a secondary measurement was 9.13 k-ohms. My Haynes manual says it should be .4 -.5 and 6-6.5 k-ohms so I’m wondering if the coil is causing the problem.