Why do I have Intermittant power steering failiure on my vehicle?

What kind of vehicle is it?

2005 what ? GM vehicles of that year have electronic power steering an they had some problems .There was a recall or two for problems on these systems .

Elaine,
1. Heat oxidizes power steering fluid, causes pump failure. Unlikely to overheat this time of year but there could be a restriction on pressure side of system causing it to overheat.
2. Many mechanics use "power steering fluid". Some systems require specialty fluids, Mitsubishi and VW come to mind. Google the type of car you have and power steering fluid and see what it comes up with. If wrong fluid has been used make sure it is flushed out and new fluid is added.
3. Chinese parts and or bad installaitons. It happens.
Hope this helps.

Question doesn't make any sense please rewrite. Thank you

May be is a power steering issue .

Replace the key sensor in the steering column.

the lock cylinder is bad. you will have to replace the ignition switch where the key goes. It involves removing the steering wheel. I just did this on another vehicle. you must unhook the battery or it is possible for the airbag to deploy when removing the steering wheel. Autozone has a tool and instructions on how to do it.

I have an 03 montana intermittant no start, security light flashes at the time of no start. Under the steering colom is a plug that comes fron the ignition with 4 wires pink , orng , blk, ppl. follow the wires and there is a plug. Try unpluging it then plug back in and try to start vehicle. If it starts then what i have done with it was wire in a relay that cuts power on ignition off and will power the module up on ignition.

blk to # 85 on relay, cut orng and attach one to # 30, the other to # 87, then attach pink to # 86. I have this working for 3 months so far no more intermittant start.

The power steering is on this vehicle is electronically assisted. Meaning it does not have a power steering pump. The electric motor could be going out, pulling too much current at times, and tripping the breaker. The best thing to do is take it to the dealer, and have them inspect it.

it may be your throttle sensor try taking it off all togather