Hello Andrew,

Surely there is a thread on a no-spark somewhere, but I don't know how to find them. On a 92, the components involved are the CPS, the ICU inside the car, the ignition amplifier, and the coil. The CPS is often the trouble, but you can tell if it is dead by doing an OBD test on it (see 7/9 FAQ or Bentley), or better yet, pull out a plug and see if there's fuel on it.

A dead CPS won't allow injector squirts or fuel pump after the first bzzzt. The ICU inside the car is reliable as a rock, so if you do have fuel on the plugs, the next suspect is the ignition amplifier module, sometimes called the power stage. This is in front of the battery in a bad spot for corrosion and road mess. Sometimes the connector is just loose or dirty; other times it has overheated and needs a replacement. That just might (I don't know) be a consequence of the open rotor you found.

Anyway, to recap, pull one of the plugs and sniff for fuel. If the plugs are wet, suspect the power stage. Best way to rule one out is to swap in a known good one, but there are checks you can do with a multimeter for more proof.

Below you see a CPS, the guts of an ICU, and at the bottom, a power stage on its heat sink.


--
Art Benstein near Baltimore

Bakers trade bread recipes on a knead to know basis.