1998 challenger no spark issue

[Ander5Kru5e]

A Challenger from 1998 with the twin 787 setup. Installed a used supposedly working mpem with DESS. I get two short beeps and one short, one long in advanced mode. All fuses checked including the ones behind Master switch. I have spark to the coils when checking with test light. Resistance test of coils is within spec but no spark to plugs. Running out of ideas so in need of assistance...

 

[JeremyD615]

Everything in the DESS system and MPEM appear to be operating properly if you’re getting two beeps with the key, one short and one long in advanced diagnostics mode, and you have power to the coil.

Which plugs are you using, and have you tried to clip the wires back?

 

[Ander5Kru5e]

Everything in the DESS system and MPEM appear to be operating properly if you’re getting two beeps with the key, one short and one long in advanced diagnostics mode, and you have power to the coil.

Which plugs are you using, and have you tried to clip the wires back?

Hi Jeremy, thanks for the reply. Plugs and wires are new. Spark checked with timing light.