99 Infiniti Q45 PS fluid overflowing/bubbling from under reservoircal after turning car off

[TJs99Q45]

Every time I turn the car off the power steering fluid bubbles up and overflows from under the reservoir cap. I have already replaced the pump, and the rack and pinion. Hoses seem clear of blockage and so does the reservoir filter. One thing I do know is a bearing in one of the lower pulleys is worn and making a pretty loud rough kind of noise when it spins. Could that be a factor? What else could it be?

[ksasser_79]

My 97 did this, when you fill it up and then turn the car off, the fluid comes back up and out of the reservoir! There is a pressure sensor on the pressure line, you really have to search to find it, It will be under the res about 10 inches or so! There will be a wire going to it, you will have to replace that sensor! I think it is about $70. Hope this helps