Not sure if the sensor is bad or on its way out. I've replaced the hole ignition system from plugs to crank sensor to icm and coil. Come to the conclusion its got something to do with the padlock sensor. Anyone know if it's possible to test it with a multimeter and how? It was getting intermittent spark just after I'd died before I put any money into it. Then after changing a few sensors and try in to start it so many times. Now there's no spark at any cylinder. Please any help will greatly be appreciated. Its been sittin almost 3 months and I need it for work.

 

year, engine, trans options?

 

03, 4.3I, auto. Double checked sensor today and it's puttin out 5v to pcm has a good ground an power source. Tracing wires back to pcm to look for a short. Any help will still be appreciated

 

sure sounds like a passlock problem. either get the body codes read and post then here or have a dealer perform a theft deterrent relearn procedure.

 

Fixed the antitheft problem. But I think I'm the process if figuring out it was that I fried something. Now I got power at coil and switching signal from icm good. But no spark. All grounds at good I checked wires and coil. All good and rotor is second new one I bought. Returned the first one thinkin it was bad. Any ideas on this new problem? haha

 

if you have power to the coil and the module is switching grd at the negative side of the coil I would suspect the coil. What did it ohm on the primary and secondary?