Power Steering problem when stationary or going slow Defender 90
Defender td5 52 plate When turning the wheel there is a jerking and juddering even when wheels are off floor when going round corners it will stick and have to pull it back i have bled steering fluid for air every thing seems ok under nieth ...belt seems ok and not slipping is it the pas box or pas pump how can i rule one out with out having to go to the expence of buying the wrong bit ..urgent advise needed asap
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If the power steering pump were going bad you'd get a whining noise when turning at slow speeds. You'll also find it hard to turn the wheel. A slipping belt will give you the same indications. Now if the lock pin is engaging the lock plate while you're in motion that would indicate a loose pin.
this problem is evident in vehicles that have a strut suspension
at the top of the strut there is a plate that is the top plate for the suspension coil spring
above that plate in the rubber bush is a bearing
if that bearing has failed then the plate will not turn and when you turn the steering wheel the power steering is in effect winding up that coil spring
that makes low speed turning very heavy on the power steering system especially at low rpms
have the front suspension checked for that bearing failure ( both sides ) by an accredited suspension specialist shop
standing stationary and turning the wheel you may even hear a creaking or groaning noise as the spring is flexing on the strut
if you do not have a strut suspension , take it to a power steering specialist shop for a proper diagnosis
No nothing would be affected in turning the steering wheel while you are stopped holding the brake.The straining you here is just the power steering pump doing it's job which as you know is run off the engine slowing it down a bit under pressure.
"I turned my steering wheel full lock bout 15 times while stationary in drive. to try and get some potential air out of the rack."
What made you suspect there was air in there to begin with? Air only gets in if fluid has leaked out, and a leak is a serious matter. Follow the instructions in your vehicle handbook and check the power steering fluid level. "The car is fairly new, only about 8 months old."
So it's still under warranty. Don't waste time with this if there's evidence of a potential problem, get the dealer to check any faults.
"could this have potentially damaged something?"
It won't have done the tyres any favours, but you'd be unlucky if you've done this on one occasion and suffered damage to anything else. Regular stationary steering causes excessive tyre wear and can delaminate the tread blocks from the tyre carcase.
"Heck, most people have to stationary steer several times when parallel parking right?"
Ummm, no. Not unless they were taught to drive by an idiot or have picked up bad habits since then. There's a vast difference between steering when the wheels are moving, even at the very slow speeds involved during parallel parking, and stationary steering.
"Shouldnt cars be designed to handle this? Especially new cars?
Especially a new honda for that matter? I understand that it is
generally not advisably to do this but considering the hell a lot of
people put their cars through I thought tuning the steering wheel would
have been nothing!"
Nothing has happened to your car, has it? Otherwise I'm sure that you'd have mentioned it. So stop panicking and don't worry. Don't do it again and treat what your friend says with caution in future.
None of what I've said is intended to upset or offend, but occasionally I just like to answer in a lighthearted style. The advice is sincere even if you don't care for the style of delivery. ;-)
Sounds like you have air in your steering system. I would start by looking for any leaks on your steering system like hose to fitting crimps, steering pump, etc. Check your steering fluid level to make sure it is full and also look for bubbles on the dip stick. If everything looks good, start the vehicle and turn the wheels all of the way to the left and then to the right. Do this while the vehicle is in park and repeat at least 5 times. This will work out any air in your steering system. If the problem persists then the power steering pump may need to be replaced.
It might be a faulty power steering pump. Try checking the level of the power steering fluid. It is probably best you have your power steering system checked by a mechanic.
Does the noise occur only when the vehicle is moving?
Try moving the steering wheel from side to side, while stationary (but don't do it too often, or you might damage something). If the noise is still present when the car is stationary, then it probably is the power steering system.
If the noise only occurs while the vehicle is moving, it could be a problem with the differential/final drive, or even wheel bearings.