1993 euro just stopped on the highway

i was told it was the ignition module. how do i go about replacing it.

Simple process if you have smaller hands....;) the module is located right above the oil filter. There should be four bolts that hold the module on, each coil is held on by two bolts. Your problem may either be a bad module OR a bad coil. If you want to know which one, you can have all these tested at AutoZone to help narrow your problem down. If you need more details ask jeffcoslacker, he's a genious and I'm learning lots from him ;)

I just replaced one on a '91 Lumina with the 3.1. It was located along the side of the block (radiator side), just over from the oil filter. The coils sit on top of it and are bolted to it. Each coils slides down onto a couple of connector posts coming out of the Ignition Modlule pack. The Ignition Module is a flat rectangular plate, just thick enough for a few electronics. The Module replaces the points and pickup as used in the distrubutor on an older vehicle. You can remove the complete coil and module bracket assembly with three or four bolts and then switch out the Module on a bench. The assembly is a mounting bracket, the Ignition Module, and the Coils. The Ignition Module probably has three connectors going to it, one for power, one from the Crank Position Sensor, and one from the ECM. You'll need to disconnect these before removal.

There's a lot of different modules from different manufactures, over the many years. As such there are many different connectors needed for good tester. The Autozone nearest me, didn't have the necessary wire harness and connector ends, so I ended up going to NAPA to get it tested- Also for free.