94 4.0 won't start very intermittent spark

[9440a4ld]

I'm kind of at a loss, I have a 1994 Ranger 4.0 4x2 that has been in the family since new.

It had some issues, and sat in the garage for a while. The battery died, and I used the "start" feature on my cheapie Harbor Freight battery charger to jump it. Well the truck never started after that, so I decided to let the battery charge for a few hours and try again. It still wouldn't start, so I grabbed one of the plug wires, yanked it off, put a clean plug in it and checked for spark. there was no spark.... Checked the other wires, same thing.


Unfortunately, using the start feature fried the powertrain control module. I threw parts at it hoping to resolve the issue.

Ignition control module
Powertrain control module
Coil pack
checked all fuses and relays.

all seems to be ok.

Now there is very intermittent spark. There's no specific sequence in the irraddic spark that I am receiving when trying to start the truck. Do any of you fine people have any ideas?

 

[disciplerocks]

Subscribing.

 

[Rowdy Fitzgerald]

Did you replace the battery? It could be producing just enough power to turn everything on but not make it run.
How well does it turn over?


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[joescool2008]

Crankshaft position sensor would be my bet. Tells the engine when to fire.

 

[disciplerocks]

He has already replaced it

 

[cp2295]

Cmp also provides spark timing but I thought it mainly provides fuel timing so probably not that, crank sensor absolutely provides spark so I'd double check that, make sure the wires aren't screwed on that, you got new plug wires correct? You're getting fuel right? So it all comes down to spark being the issue right?