94 ram van 5.2. intermittent elec/start prob

[stnich]

Replaced pick-up coil,ignition coil and crank position sensor.Will start then run fine for a day,week or more. Then,while running it will die.It will turn over, but it wont fire. Sit for a couple hours or a day,then starts. Plenty of fuel and compression, but no spark.

[alloro]

It's a bad ASD relay or a bad PCM (computer.) What's happening is when either one of these is getting hot, it stops working until it's cooled down.

[stnich]

It will do this sometimes after running 30 seconds. It usually happens in first 5 minutes. It will run for days/weeks sometimes no problem.

[Tommy2500]

I agree with alloro- replace the ASD relay. PCM is another matter - lots of
good used ones out there if you look. Don't go out and buy a "rebuilt" like
I did and got the shaft for mass $$$. I'd also look at the grounds. My
intermittant problem on my Van ended up being both bad wiring (inside
the harness..left side of the motor between intake and valve cover) AND
a bad connector to the crank sensor. Crappy wiring on these years
Dodges - a trusted dealer told me MANY warranty problems. Keep looking;
you'll find the cause. Good Luck.