Hello everyone
Was kind of hopping somone could help me witha small problem I have encounterd! I have a 1996 T&C LXI with a 3.8L . It cranks over fine but just wont start. I have very erratic spark. I will tell you what I have done : Checked for trouble codes(none) Checked for spark with a spark checker(very erratic) checked fuel pressure(bounces between 43-53psi when I crank it and when first turn on key pressure is above 43psi)Checked all wirring between sensors and pcm (all seems fine)checked cam and crank sensor out puts with scope(all seems fine)checked voltages at all sensors and at coil pack(all seems fine) checked ground curcit for coil pack (all seems fine ) sent pcm out for diagnostic and repair by a chrysler certified repair facility(they said all was fine)Replaced coil pack, replaced spark plugs and wires. bought body and powertrain manuals from chrysler and performed all test related to no start condition. do not know where to go next.Scan tool shows ignition advanced 26 degrees before cranking

 

Sounds like you're well on your way to a unique problem, and you probably have this covered already, but have you tried this procedure I listed in this other thread?

This probably isn't it, but I would want to ensure that I was getting constant battery power at the B+ terminal while cranking before condemning the ignition system. If I was getting flickering at this terminal, it would mean the ASD relay is probably cycling, most likely due to a poor crank/cam position sensor signal, especially since the PCM has been "blessed". This of course assumes there is nothing wrong with the battery.

Are all the cylinders getting this erratic spark? If not, which ones are erratic?

 

here is the info that based on what u have said and what u are looking for will help.
Make sure that either the pcm is keeping the asd going or u are dropping out voltage to the asd coil or b+ supply

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