The old oil fill tube was broken in half, installed a new one today but could not get it all the way to the oil filler pipe at the engine side. I read that you can break the pipe that goes to the engine easily and the it's total pain to change it out so I don't want to use excessive force. It stays put just fine and the clamp is holding it in place.
The old broke old fill tube, I think it's the original '97 one
.
The new tube is not 100% fit onto the oil fill pipe.
I'll see in a few days if it cured the RPM problem because I was basically driving without the oil cap
. Also I'm wondering is my AOS is not good, the cracked oil filler tube is one of the symptoms of a bad AOS. After I've put the new tube I still can remove the oil fill cap but now the it has considerable higher level of vacuum and the engine dies almost instantly after the cap is removed (cold engine).