So..My 94 Disco 3.9l auto has this small yet entirely annoying issue. When it gets to operating temperature, it starts missing terribly resulting in a horrific loss of power. Funny thing is, when it was chilly the other night, I drove it for about 45 minutes with no probs....plenty of power. I think I have narrowed the issue to either the Ignition Pickup module, or the Ignition Amplifier module. Question is...WHICH ONE? Or am I barking up the wrong tree entirely?