What could cause the whining sound my car makes when braking in reverse?
Normally the brakes “get used to” being used in the forward direction - disc brake pads will move to one end of their travel within the caliper. Drum brakes are usually directional also - they are designed to be more effective in the forward direction.In reverse, a disc brake pad will move to the other end of its travel within the caliper. This may only be a very small difference, but it could be enough to seat the pad slightly differently and allow it to squeal. Drum brakes might also squeal in reverse because they are not “pulled in” to the drum surface but pushed away instead.If the pads and/or shoes are fairly worn, try replacing them.Some disc brakes have a shim, spring or other retaining clip to hold the pad in place. Sometimes these go missing or are not replaced when pads are renewed, and in some cases these are designed to eliminate squealing. So check what’s meant to be there is there. Another thing to consider is applying a compound such as ‘copaslip’ to the BACK surface of the pad (obviously not to the friction face!) This will take up any small clearance there and can eliminate squeals.If the noise is coming from drum brakes, I’m not too sure what you can do about it other than change the shoes. ‘Copaslip’ can also be used where metal parts touch, such as a handbrake lever or where the slave cylinder pushes on the shoe blade.
Why would I hear a clicking sound when applying brakes?
Without a year, make, model and engine size it's impossible to give you an accurate answer. If your car happens to be a GM product however and the noise your hearing is coming from the front brakes there;s a possibility that the brake pads weren't staked down when the brake job was done. A common problem when having your brakes done by an in experienced tech. The pads are shifting when the pressure is applied to the calipers. It's not a safety issue just more of an annoyance. Also if the shims/bushings are worn in certain caliper type designs many cars use these days, the same noise may occur as well. Then there's also the chance that you have worn front end parts that will make noise due to the shifting of the weight forward when braking. But like i said earlier without the proper information I'm only performing educated guessing diagnostics which is more or less like looking into a crystal ball. Good luck and hope this helps.
Why is my car making a clicking noise?
Heating and Air ConditioningA car's climate control systems include components that can can produce a clicking noise if they fail or require service. One of these components, the heater plenum, contains devices called blend doors that control the mix of cool air to warm air as the user switches the controls from one climate setting to another. These blend doors run on an electric actuator that can produce clicking noises when it fails. The air conditioner compressor may also make a soft clicking noise if its refrigerant supply has run low.Belts, Joints and SupportsMany of the support systems on a car can cause a clicking noise if they malfunction or wear out. Struts and shock absorbers include hydraulic dampening valves that will click or rattle if they lose their internal oil pressure. Worn CV (constant velocity) joints on the front axle can also make clicking or popping noises, Damaged CV joints make a pronounced clicking noise when accelerating or making sharp turns. Additionally, a loose serpentine belt can cause a clicking sound. Replacing the belt's tensioner can alleviate the problem.ElectricalLow voltage from the car's battery can lead to rapid clicking or ticking noises when the driver tries to start the car. As a battery ages it may lose its ability to deliver a consistent 12 volts of electricity to the starter. In this case, when the driver turns the ignition key, the starter turns itself on and off rapidly, resulting in a rapid succession of clicking sounds. The driver may have to replace either the battery or the alternator that supplies electrical charges to the battery.In short there are many reasons it could be doing that .Today's cars have complex systems with many components, many of which can cause a clicking, tapping or rattling noise when they start to fail. Drivers experiencing this unusual sound may have to let a mechanic examine the ignition, climate control, electrical, exhaust or other systems to track down the cause of the problem. Some clicking noises signal a simple replacement part, while others may warn of imminent engine failure.However I don't think anyone will be able to help you here without knowing a bit more information. Please tell us the vehicle in question . Make model year ? Also when does this clicking noise take place? Thank you and Good luck.
Why is my car making a clicking noise but not starting?
This is a common problem that can happen to a lot of cars. And there’s 2 main problems that are related to when your car makes a clicking noise but doesn’t start.(1) Faulty starter. The starter helps with igniting the vehicle, so if you’ve ruled out that the battery is fine and the car still doesn’t start and it makes a clicking sound with the lights on, then it’s likely a faulty starter and you’ll need a starter replacement(2) Ignition switch. If you know your battery is working properly, but your car doesn’t turn over on the first few tries, you might have a problem with the ignition switch. You can try to narrow down the cause of your issue by turning on your headlights. This is because your car's battery controls your headlights and dashboard, and if it's the case that they turn on your engine isn't able to start start, then a bad ignition switch is the likely culprit.Hope that helps!
Why was there a clicking sound under my car hood after I turned it off?
Not knowing your year, model and engine I can only tell you some general items that pertain to most cars.There electrical relays and switch's ,about 2 dozen on average. When you shut the car down the radiator fans can be active until the engine temp cools to specs. Evaporative emissions systems do some of their work at shutdown. Fuel systems depressurize in many engine in order to prevent wear that constant pressure can induce. Many of today's cars have automatic parking brakes and many cars have done away with cables and use electronics to change gears and engage park. Some ABS brake system cycle at shutdown and idle air control can be active at shutdown. I can go on and on but I think this should help you to understand that electrical relays and fluid pressure systems all can make clicking noises after shutdown.I assume that the louder more random ticks with a metallic sound you know are metal parts cooling down after shutdown.Most of the relay sounds are done with in 2 mins and the metal cool down noises are done with in 5–10 mins depending on temp.As a bonus I will bring to your attention a fairly new item not quite under the hood but behind the grill and that is electrically operated “grill flappers” or “blinds per se” that help your car control temp and help aerodynamic performance at higher speeds. My wife's car opens them up after shutdown if they were closed at that point.Hope this helps!
Knocking noise coming from engine?
Have a 2006 Chrysler Pacifica Touring. Recently I noticed a strange knocking noise coming from the engine area. Generally it is fairly quiet...though for one full day it was fairly loud but then went back to being quiet. I can not detect the noise when it is just at idle in the driveway. I only notice it when after I accelerate to around 30 mph and then take my foot off the gas as if I'm slowing for a stop sign. The sound will be there from about 25 down to 15 mph and then be gone. I can actually hear the knock slow down as the speed drops. I've listened as closely as I can and I can detect no noise during acceleration though. I'm not a car guy so I wouldn't be fixing something myself, but I like to know what I may be walking into before I take it to a mechanic.
My car makes a faint whistling sound if I let off the accelerator at around 30kph. The sound slowly decreases in pitch as the car coasts. What could cause this?
There are main things that can cause this, particularly without knowing the general direction of the noise.To narrow it down you have to answer the following question: If you rev the engine in neutral and stationary, do you hear the noise?If yes, then it's related to the engine or its auxiliary components. Could be:Vaccuum leak: you might be able to confirm roughly the source by listening under the hood while someone revs the engineBad ground connection: the sound might actually be coming from the speakers.If it's not affected by revving the engine, then it's either transmission or suspension.If you can pinpoint the general direction of the noise and it comes from one of the corners, it's going to be a wheel bearing.I can't truly provide insight into the transmission at this point in time.I'm fairly confident it's the wheel bearing. Please let me know when you find out, or when you get more info.Thanks for asking and goodluck.