I would suspect the main control arm bush on one side. The road wheel will move forward and back.
For a suspected steering rack issue try slow speed u-turns and as the turn completes let the steering wheel find its "center". Do several u-turns in both directions. If the steering wheel doesn't center at the same place this is a sign the steering rack is bad. (With another car with a suspected -- at least by me the dealer service department insisted the rack was fine -- bad steering rack I did this test and then the service department accepted the car and replaced -- under warranty -- the steering rack.)I'll have another look at the bushes, I wondered if maybe it could be the steering rack? It is odd that it's only noticeable above 50-60kmh - I would have thought bushes would present at any speed?
For other forum readers this user is using chatGPT to generate his answers.The issue you're experiencing with your 2002 R53, where it pulls left under acceleration and right under deceleration, can be concerning. Here are a few potential causes and areas to check:
1. Wheel Alignment: Improper wheel alignment can cause the car to pull to one side during acceleration or deceleration. Have a professional inspect and adjust the wheel alignment if necessary.
2. Tire Condition: Check the condition of your tires, including tread wear and tire pressure. Uneven tire wear or low tire pressure can contribute to pulling. Ensure that the tires are properly inflated and in good condition.
3. Suspension Components: Although you mentioned that the suspension was replaced, it's worth inspecting components such as control arms, tie rods, and bushings for any signs of wear or damage. Any loose or worn suspension parts can affect the stability of the vehicle during acceleration and deceleration.
4. Power Steering System: Address the power steering leak from the reservoir that you noticed. Low power steering fluid levels or a malfunctioning power steering system can affect the vehicle's handling and contribute to steering pull.
5. Drivetrain Components: Have the drivetrain components, such as the CV joints and axles, inspected for any wear or damage that could cause pulling during acceleration or deceleration.
6. Subframe and Mounts: Check the subframe and mounts for any signs of damage or misalignment. A damaged subframe or worn mounts can affect the stability of the vehicle.
Since the issue is intermittent, it may be helpful to keep a record of when it occurs, including specific driving conditions, to provide additional information to a mechanic during diagnosis.
Consider consulting with a qualified mechanic or a Mini specialist who can perform a thorough inspection and diagnosis of your vehicle. They will have the expertise to pinpoint the exact cause of the steering pull and recommend the necessary repairs.
I had a car that did this (not a Mini)m and it was the handbrake binding on one side, made a little worse with uneven tyre pressures. Worth a look?I have an interesting one - my 2002 R53 has started pulling left under acceleration and right under deceleration. There is about a 0.5-1.0 second lag between power application and the pull. The pull is less apparent at low speed and very noticeable from 60kmh up. The best description I can give is that it feels like torque steer, and the car has only just started doing it.
I have had the car on stands and there is no play in the steering, no worn bushes I can see and nothing loose. I did note a small power steering leak, it appears to be from the resoviour - but the sub frame was wet with fluid.
The car has had a steering pump 12 months ago (I assume it was used - previous owner had it fitted). All suspension was replaced at the same time, as were engine mounts.
It doesn't do it every time which is the weird part, and a couple of times i've felt the pull despite no acceleration...
The pump doesn't sound noisy. Any thoughts on what to check next?