no spark still... help please

[Sully]

lets start from scratch please.

I have no spark at the plugs or coming from the coil.

I have a new crank shaft position sensor, ignition control module, and ignition coil as of this past 4-5days. I have tested the wiring harness for the crank shaft position sensor to be good, and still get P0336 and 339 cels. I have good voltage going to the control module and the coil. The distributor cap and rotor have both been removed, cleaned and inspected. They were new in nov/dec when the new motor went in. I have left the trucks batteries unplugged over night to clear any codes. Nothing is working yet.

The only thing left I can think to try is reflashing my ecm and seeing what happens.

 

[Fobroader]

I was just gonna suggest trying someone elses ECM.

 

[Sully]

i texted a guy about that.... not sure he is going to bring his up here though

 

[Fobroader]

No boneyards around there you could get a cheap ECM??

 

[Sully]

money is tight right now.... esp after 330 bucks on parts.

 

[barebones 1500]

What about cam sensor? I checked in my haynes and it said that it works like the crank sensor to let the ECM know when the #1 cylinder is TDC.

 

[Sully]

I was just talking to norcal about that. Im pretty sure if the cam sensor goes, the truck shifts to a limp mode

 

[barebones 1500]

that is entirely possible but you have tried all the obvious with no help. i think it is at least worth checking.

 

[Sully]

true enough... I'll check my service manual for a voltage check on it. I am about to see if I can flash the ecm

 

[Fobroader]

Anyone with a factory service manual help sully out, maybe the trouble shooting guide has something to help the poor guy out.