95 3.8 Spark Issue

[jbrown751]

I put a 97 3.8 in my 95 stang. I used the 95 sensors and harness. I have spark sometimes but mostly not. Checked crank sensor, coil pack, icm, pcm, pip, all check out. Today I went through all the ground straps and cleaned terminals on the battery and fuse box. Oh,all the fuses are good as well.I'm not sure what to do next. Any ideas would be awesome. Thanks

 

[jozsefsz]

In another recent thread a gentleman mentioned his v6 Stang had an intermittent no-spark condition related to a failed EEC relay in the CCRM. During these no-spark times, do you also notice the fuel pump not priming? If that's the case I'd consider swapping in a new CCRM as well. Obviously I'd start with retracing every connector and making sure they're clean, tight, and connected to the right place as an engine swap gives you a ton of opportunity for a small wiring problem to arise.

 

[jbrown751]

Great idea I will do that. I haven't noticed any fuel pump problems although I really didn't pay attention. The ccrm is the module attached to the radiator?

 

[jozsefsz]

Yessir, that's the one.