Gearboxes From Scrap Car Breaking
We have a wide range of gearboxes and parts for all makes and models of cars and vans that are ready for sale and distribution. We have all types of high quality car gearboxes at Allstar breakers along with many other car parts all at incredible value for money backed up with a 3-4 month warranty! We have thousands of car parts at our breakers yard warehouse giving you all you need to repair your car and get safely back on the road again.
Diagnosing your car yourself may seem like quite a difficult task, however if you think of your car like your body you will be taking the first step to diagnosis. For instance, if you were to get a pain in your stomach without warning you would start to think of what the last thing you ate was to figure out why your having the pain. A similar way of thinking goes into diagnosing your cars problems. Once you start to notice something out of the ordinary its time to consider what the problem could be and finding a way to fix it. Allstar breakers is here to offer an inexpensive solution to any replacement gearboxes and spare parts that a car diagnosis may then require.
10 Gearbox failure Signs
1. Refuses To Go Into Gear
Manual transmissions have their share of things that can go wrong. One potential problem is that the gear stick refuses to budge when you depress the clutch pedal and attempt to move the gear stick.
It may happen when trying to get into first gear from a stop, or at any point up and down the assorted gears. Common causes include low transmission fluid, wrong viscosity (thickness) of fluid, or required adjusting of the shift cables or clutch linkage.
If you get a smell of burning transmission fluid, it may indicate your transmission is overheating. Transmission fluid not only keeps the transmission’s many moving parts properly lubricated, but it prevents the unit from burning itself up, by providing much-needed cooling.
In some vehicles, the transmission even has its own mini-radiator (an oil cooler) that circulates fluid to transport heat away from the transmission unit itself.
Common causes include low or inadequate transmission fluid, which can in turn indicate a leak or dirty fluid that needs changing.
3.Transmission noisy in neutral
Hearing noises while in neutral?
Such sounds could have a simple and inexpensive solution – as with many of the problems on this list, adding or replacing the transmission fluid sometimes does the trick. Bear in mind that as is the case with engine oil, different vehicles do best with the specific formulation called for in the owner’s manual.
Alternatively, lots of noises from the transmission while it’s in neutral could signal something more serious, like mechanical wear that will need the replacement of parts. In this case, common culprits are a worn reverse idler gear or worn bearings, possibly coupled with worn gear teeth.
In a normally functioning gearbox, the car stays in the gear you designate, or that the computer designates for a given RPM range, until you or the computer initiate a gear shift.
But on a gearbox in which the gears slip, the car can spontaneously pop out of the gear it’s in while driving and (in a manual) force the stick back into neutral.
This is unnerving at best and potentially dangerous at worst: when you mash the gas pedal to avoid an out-of-control vehicle, the last thing you want is a gearbox that doesn’t get power to the wheels. No need to scratch your head over whether this is trouble or not: if it happens, you know it’s time to have your transmission examined.
5. Dragging Clutch
Here’s another transmission trouble sign that haunts manual transmission vehicle owners: the dreaded dragging clutch. A dragging clutch is one that fails to disengage the clutch disk from the flywheel when the driver pushes in the clutch pedal.
When the driver attempts to shift gears, he or she can’t because the still-engaged clutch is still spinning along with the engine. The driver is abruptly made aware of this by the grinding noise that then ensues with each attempt to shift.
Fortunately, the most common cause for this problem is not that severe or costly to fix — at least not compared to some other transmission issues. More often than not, the problem is too much slack in the clutch pedal. With too much free play, the cable or linkage between the pedal and the clutch disk doesn’t have enough leverage to disengage the clutch disk from the flywheel (or pressure plate).
6. Leaking Fluid
Leaking transmission fluid is probably one of the easiest ways to identify that your gearbox needs attention. Automatic gearbox fluid is vital to your car’s shifting capabilities, so a little fluid on your driveway can quickly turn into a major problem. Automatic gearbox fluid is bright red, clear and a little sweet-smelling when everything’s working correctly. When you check your automatic gearbox fluid, make sure it’s not a dark color and that it doesn’t have a burnt smell. If it is, you’ll need to take it to a garage and have it replaced. Unlike your car’s motor oil, the transmission doesn’t really consume or burn up any fluid during use, so if you notice you’re running low on fluid, then it’s definitely leaking out somewhere.
If you have a manual transmission, checking the fluid levels may not be as easy as simply lifting the hood and reading a dipstick. Manual gearbox fluid has to be checked right at the gearbox case — usually through the fill plug. Again, if you suspect your gearbox is losing fluid, have a mechanic locate the leak and have it fixed.
7.Check Engine Light
The check engine light can be a great early indicator that something is starting to go wrong with your gearbox. The check engine light can come on for any number of reasons not related to your gearbox as well, but don’t overlook this clear warning sign.
In newer cars there are sensors throughout the engine that pick up irregularities in the engine and notify the computer that there’s something wrong in a particular area. In the case of the gearbox, these sensors can pick up vibrations and early problems that you may not even be able to feel or see. If you want to know if your check engine light is telling you about a gearbox problem, you can purchase a diagnostic scan tool that you plug into your car underneath the driver’s side of the instrument panel. The scan tool will display a code that corresponds to the area of the vehicle causing the fault. If the code tells you there’s a gearbox problem, well, that’s a good time to see your mechanic.
8.Grinding Or Shaking
Depending on whether you have a manual or automatic gearbox, your car may respond differently when your gearbox isn’t working correctly. With a manual gearbox, a common sign of trouble is a grinding sound or feeling when you shift into a new gear. If you fully engage the clutch, shift and then hear a grinding sound, you may have a worn clutch or you may just need to have it adjusted. Or perhaps one or more of your gearbox gear synchronizers, or synchros, is worn out or damaged. Grinding gears can be caused by a number of different factors.
For automatic gearbox problems, you’ll most likely feel the car shimmy into each gear rather than the typical almost unnoticeable shifts, or the gearbox will make a jarring transition into the next gear. Both are signs that your gearbox needs attention. If you notice anything other than a smooth transition between gears, then you might need to have your automatic gearbox looked at for adjustments or repair.
9. Whining, Clunking & Humming
It’s difficult to nail down exactly how your car may sound if there’s gearbox trouble, but one thing’s pretty certain, you’ll probably get a that-doesn’t-sound-right feeling when you hear it. Every car is built differently, so the sounds they produce can vary greatly, but if you have an automatic gearbox, there’s a good chance you may hear a whining, humming or even a slight buzzing sound.
With a manual gearbox, the sounds will usually come across as a bit more abrupt and mechanical sounding. If you shift gears and hear a clunking sound, then you definitely need to have it checked out by a professional. But a clunking sound from underneath your vehicle may not always point to a gearbox problem. Your constant velocity joints (CV joints), or even your differential may be the culprit.
10. Lack Of Response
Gearboxes are designed to go into the correct gear every time, so when they hesitate or refuse to go, it’s a sure sign there’s something wrong. With manual gearbox problems, you may notice after shifting into a gear that the car’s engine will rev up, but the car won’t be moving as quickly as the engine is running. In this case, a worn-out clutch or more serious gearbox problem may be occurring.
Automatic gearboxes have the same lack-of-response problem, but will usually manifest the issue while engaging the “Park” or “Drive” selection. The car should shift quickly into either of these modes, but if your gearbox hesitates to go into either one, then it’s likely there’s an issue with the gearbox.
Information was provided with thanks from auto.how it works