Thanks for the tip. I've got it ordered and the other is under warranty so I will have 2 new ones at the same time. The major cause of my rover issues came from a vacuum leak on the plenum.

 

SUCCESS!!! The codes are still there because I haven't cleared them, but I found and fixed the vacuum leak and have a good idle again. The sulfur smell is still there, but the new sensors and cleared codes should fix that. Thanks for the help everyone! There was a small leak in one of the hoses going to the top of the intake.

 

So before you can fix the other new codes, you need to deal with that 02 again, should be able to get it replaced under it's 1 year warranty. Once that is done, you will need to figure out if the engine has an issue causing the 02 to fail like misfire, coolant leak or bad valve and fix it. Once that is done some of the other new codes will go away, let us know what comes back and don't do anything else in the mean time or you will loose track of where you problems may be coming from.

 

here what happened to me. i got service engine light and i replaced all 4 o2 sensors, 2 front and 2 back. they are hard to get to, and you might have some problems unbolting them from the exhaust, my mileage is at 155k. then i also cleaned out my MAF sensor with special spray from CRC. you need to use the MAF only sensor spray, do NOT use carburator cleaner or anything else it leaves a residue, and deteriorates the plastics and then you need to replace for MAF. last time i checked it was $200+ for a MAF.

oh, disconnect your battery before doing any O2 sensor changes....important.

then my service engine light dissapeared and my idle throttle is much better and also my pickup improved....no problems so far

 

You can actually use any fluid to clean your MAF, it does not matter because the end results will be the same.... a dead MAF. Don't do it...