so my steering wheel turn with more effort then usual.

i thought it was the pump and replaced it, but has the same effects.

so im thinking its the rack and pinion...

any DIY to replace this? is it at pretty easy job?

 

Check your tire pressures?

 

tires pressure is good~~~ anything else it could be?

 

Steering pressure sensor. Have a look physically and / or scan the ecu for error.
Mine broke lol.

 

Where is that located? And how do I know it's faulty by looking at it? I'm not throwing any codes right now

 

you didn't recently change to wider tires did you?

 

No I had 255/285 from the beginning

 

I'm trying to remember where exactly but I can't. It should be right under the center of the engine I think. It's just some connectors. Maybe it's loose / dirty.

 

i thought this only assist power steering at low speed? like in parking lots and so on

 

could it be the steering shaft? iv been searching around and do we have a u-joint?

 

I think that's true. If it's not functioning, then your steering will be stiff at low speed.

 

Maybe your power steering fluid is low? What year is your Z and how many miles are on it?

 

no steering fluid is new and good. im thinking it might be this sensor. but im not getting a code for it.

 

Digging in the graveyard here lol did you ever fixed this issue? I'm having issues with steering now. I turn (happens both directions) and at first is normal but then gets hard at certain point. Also prior to this issue (while making a turn) half way thru the turn I let the steering reposition itself but now it barely wants to reposition itself. I have been told by one shop that my rack and pinion is bad then I had another wanting to play the game of Which part is it? told me to do the power steering pump first cause my fluid is fried and most likely its cause of a bad pump but then said and if that doesn't fix the issue then is your rack and pinion. Does anyone here know a trustworthy shop or local mechanic that know this cars well? I'm located in Orlando,FL.