a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Unless you have a power steering assisted brake booster more common with a diesel, you may have a new pump issue like the flow control valve in the pump or air in the system yet, check for air bubbles or a milky looking fluid and the correct fluid. Try in a parking lot out of the way of traffic to put in neutral while moving,rev the motor slightly and brake as you would when the PS assist stops,by revving the motor just off idle this will increase the PS pressure it should act normal if it's a flow control issue and if the pump is capable of producing the correct pressure.
Did you use a test light to diagnois problem ? check that you have power coming to brake switch from fuse and then see if it switdches over when you apply brake. sounds like it isn't adj. right if it won't come out of Park. I will tell you this...there is a 6way plug by steering column ,follow brake sw wires up to top of column and that is where the 6 way plug is, make sure this plug is plugged in tight and square, because if not you will be chasing the problem forever..brakes run through this plug, it is easiest seen by removing lower column close out to dash and metal bolster brkt behind it to get to plug.
Maybe you blew solid state module. There is a manual bypass.
Shift Interlock System
A shift interlock mechanism prevents shifting the transaxle out of the PARK position unless the brake pedal (2455) is applied. The shift lock actuator is energized when the ignition switch is turned to the RUN position.
This locks the shifter in the PARK position.
When the brake pedal is applied and the stoplight switch (13480) is activated, the shift lock actuator is deactivated and the shifter can be moved out of the PARK position.
a steering wheel shake with the wheel fully turned usually indicates a seizing constant velocity joint (axle). it can also be accompanied by a clicking noise while turning at higher speed. this is easy to confirm. raise and support the front of the vehicle and put in neutral. turn the wheels by hand with steering wheel pointed straight ahead. there should be minimal resistance. then try rotating the wheels with the steering wheel turned all the way to one side then the other. if you feel any extra tightness or binding, you indeed have a seizing joint. if the axles look ok visibly, you will need to remove the axles to confirm which side is the problem. good luck!
try taking the vehicle out in the parking lot and cut the wheel to hard lock, apply light throttle and do circles to the left, stop cut the wheel to hard lock on the other side and repeat this three or four times, also you can apply throttle while in park and rotate steering wheel lock to lock many times, the explorers are known for having air trapped in lines,try this and let me know.
Sounds to me like your power steering pump has gone bad. Being a vehicle with a hydro-boost brake system that would explain the power brake failure. Hydro-boost brake systems utilize pressurized power steering fluid to provide brake assist. In most lighter GVWR vehicles this function is performed by engine vacuum. There is a recall on certain Silverados and Sierras that addresses a faulty check ball in the booster, but your vehicle is affected by a steering issue as well. This would indicate to me that it is the pump. You can however check online to verify if your vehicle is affected by the recall. Hope this helps.