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2nd Gen Ram Tech1994-2001 Rams: This section is for TECHNICAL discussions only, that involve the 1994 through 2001 Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
Unplugged it and now it only runs bad for 20 seconds and then purrs like a kitten, looks like I'll change it out and just deal with a 20 second rough idle, I've heard our trucks don't like bosh sensors is that true or just the dealerships way of making us buy mopar ?
if unplugging it helped, for sure replace it, NTK is good, check rockauto for them. if the sensor is bad, i would wonder about the cat being clogged a little. is the plenum gasket good or is it leaking? check inside the intake manifold and see if you see oil. if you do then id bet its blown and fixing that along with a full tuneup and i bet your problem is fixed.
Plenum gasket was changed at 92,000 miles (at 104,000 now) I'm not sure about the cat, the truck sit for 5 years before I got it I'm still working kinks out. I'll order an upstream o2 sensor and check that off the list