First, I want to apologize for having stuff strewn throughout three threads, I'm going to continue here solely, to limit confusion. I also have been responding with a blackberry, which does not allow me to quote responses and that makes me appear all over the place as well...
moonranch: I will try to isolate the circuit... should be easy enough to apply power to the relay. That would at least make the quirk last longer...
I started it last night, albeit it was 30*F at the time; the truck had sat all day and the temps had been near 45*F. It did idle rough, and you could plainly hear a miss in the exhaust. I took a short video of it (with sound), but the echo from the building makes it hard to hear the miss (although you can still hear it). I was all excited to go out this AM and try again, only to have the temps around 40*F this AM... so I decided to not bother since it needs to be cold. I will try again this weekend since it is supposedly going to be in the 20s.
Keep in mind, this video is showing the very mild version of what happens... when it does it bad, you can not only hear it miss badly, but it smokes bad, and you can hear what sounds like an injector snapping (like when they fail). It starts out fine, but if you listen to it around the 40 second mark you can hear it missing slightly... it does it a lot worse at times. See if I can make this link work...
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Let me know what you think about this video, and if it sounds normal to you... or if you pick out any other noises that might be an indicator (ones that may have became "normal" to me).
I pulled the valve cover last night... disconnected the leads to the injectors at the valve box (not from the injectors themselves) and checked the resistance of the solenoids. I "zero'd" the meter the best I could, it stabilized between 0. 2 and 0. 3 ohms... unfortunately, my digital meter only has resolution to the nearest 0. 1 ohm. I then tested each solenoid, again disconnected at the valve box, to find all were reading 0. 4 ohms after the reading stabilized... no single injector read odd compared to the others.
I also inspected the injector connections, and found they were fine... really didn't figure there would be an issue since Lloyd knows what he's doing, but I was in there anyway...
So now, I got to find a meter to check the solenoid passively... I have a call into my father at the moment.
I was also looking at the harness from the valve box to the injectors... and I may look at that deeper because some of the wires were touching the head, and were not protected with a loom from abrasion... not sure if this is ever a problem (rub through), but it doesn't hurt to check... although I would expect it to happen all the time then, not just when cold.
I was going to read resistance back through the injector harness, to see if there was any odd reading there... but decided against it since I do not know what shorting those leads out (even with the ignition off) might do...
At this point, I'm torn. Do I take it back to Lloyd yet again (bad time of year since this is our second 4wd we rely on) and let him try to figure it out (and possibly come to the same frustration level I currently have)? Do I take it to the dodge dealer and let them diagnose it?? Do I just buy a new set of injectors and continue to throw parts at it??
All this and there has not been a single code set (that a normal DIY code reader will see, I have an Actron)...
if this was an injector circuit issue (not the injector itself), would it throw a code?
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