Clean and check all engine grounds. The Dodge PCM is way more sensitive than a Chevy or Ford. A little bit of stray voltage can cause fits in the monitoring system.

here's the spark plug TSB:
http://dodgeram.info/tsb/1998/18-48-98/18-48-98-v8.htm

Basically just keep 5 and 7 away from each other and the boots on the disty cap at a 90* angle to one another.

 

They do tend to corrode into place. To avoid the same hassle in eight or ten years, chase those threads with a spark plug thread chaser and use anti-seize on the new sensor. Just be careful not to get any on the sensor element itself or it'll be a lot less than eight or ten years before you're in there again.

 

Mine is a v10.

I'm going to battle the o2 sensor - It's the one next to the tranny on the passenger side, right?

 

The one that's on the upstream side of the catalytic converter, yep. The other one is well downstream of the cat.

 

Well, it turns out I have 2 pre-cat O2 sesnors - one on each side. I unpluged the one on the driver side and still misfire, but when I unpluged the one on the passenger side - it's running fine...for now...I will wait a few days before I get my hopes high.

Still haven't replaced the sensor and I don't think I have what it takes to get this thing out - I've tried everything - hot exhaust, cold, been soaking it with Kroil for the past 3-4 days and this thing is not going anywhere I even have the frikin special O2 seonsor wrench! It shouldn't be a problem driving with it unhooked, right?

It's weird though how no CEL came on when I upluged the sensors...I remember my wife's Tahoe was driven forever with the CEL on until I got around to replace it...

 

Missed that v-10 in the sig. It does sound like an O2 if revving fixes it. You're basically heating the O2 sensor to it's operating temp so it reads a bit better. When the amount of exhaust gas decreases, the sensor cools a bit and starts to send bad info to the PCM again.

on a related note, I bought a can of Mopar Rust Penetrant to use on the wheel hub of my truck. I've never seen anything like it, it foams up and the rust runs out like water. Couldn't pull the wheel hub off dry, but after spraying this stuff on the spindle, I about fell on my *** when I went at it full force again and it slipped right off.

Might want to try it on that O2 sensor.

 

Thanks for the tip about the Mopar Penetrant. Also, I'd have paid top dollar to watch you fall on your ***!

 

You like rears, eh? Here's one for you:

 

Where do you get it from? (the Mopar, not the sheep's ***)

 

dealership has it. Was about $7 a can, IIRC. Great stuff.