It is possible that the wear indicators for the brake pads are touching the rotor, indicating worn brake pads. They probably make the noise all the time, but at higher speeds, the pitch changes, and there is more road noise, so the problem is less noticeable. Depending on how much you drive, and traffic situations, etc, the noise should get a lot more more noticeable within the next couple of days. You will then have to replace the brake pads, ASAP. If not, the pads will tear up the rotors, and then they too will have to be replaced.
It speeds up.
catalyst
speeds around 50kph
I've had a similar problem on my 98 civic ex. There's two resistors wired to the fan control. One for speeds 1 and 2 and another for speeds 3 and 4. I suspect the one controling the 1 and 2 speeds has blown.
Heat speeds up the rate of evaporation.
Squeking at low speeds? Its your coil springs in your suspension. Have them fixed and the problem should be solved.
I had this happen. It was the wheel bearing. It starts off as a faint whine, but over time as the bearing gets worse it becomes a squeal at highway speeds and a squeak at low speeds. If squeaking at low speeds the bearing is on its last legs and total failure is imminent probably causing more expensive damage and repair.
I'm assuming by "shifting speeds" you mean when the manufacturer recommend you select the next gear. This will vary from bike to bike depending on the engine, transmission, and final drive ratios. You would find the information for your specific motorcycle in the user manual that came with it.
The blower motor speed resister is burned out.
It is most likely due to a loose power steering belt. If the steering wheel is hard to turn at speeds slower than 40mph or it gets harder the more you turn it and the squeaking noise happens when you turn the wheel, then you need to check the tension on the power steering belt.
I was considering a Lexus RX400h when I realized that it was very inefficient at freeway speeds 65-75 mph. Most of my driving is freeway at high speeds. How does the Toyota Highlander hybrid technology work? Is it still beneficial/cost effective at freeway speeds?
Previas have a history of a whining noise coming from the catalytic converter. There is a bracket inside the converter that when loose or has came apart creates the whining noise during acceleration. It especially is very pronouced during high speeds in the freeway. You might be in for an expensive cat converter replacement.
Dirty brake pads could cause a car to make a squeaking noise when putting the car in gear or when releasing the brakes. Cleaning, sanding, or replacing the brake pads should make the sound stop.
A 2000 Jeep automatic that is not shifting correctly after it gets hot might have something wrong with the speed sensor that is located in the transmission. The speed sensor tells the transmission what gear to shift into at certain speeds.
could be the transmission is low on fluid... could be the transmission is low on fluid...
What is the roaring noise from a 1999 Toyota Camry XLE at speeds over 35 ? Sounds like it is coming from the rear.
That depends on what your rear end gear ratios are. It varies greatly. As a default, you typically upshift at 1500 RPMs and downshift at 1000 RPMs.