6 Transmission Issues You Cannot Afford to Ignore

AAMCO Lake Forest • March 11, 2020

Share this article

How to spot them, why they matter, and what to do

We all love to get from A to B as quickly as possible, but when was the last time you thought about how it worked? Or, more importantly, what do you need to be doing to ensure your vehicle is always in perfect health? We're going to take a look at one of the most expensive parts of any car to replace: the transmission.


What Is a Transmission?


The transmission — also referred to as the gearbox — is the connection between the engine and the driveshaft. It determines how fast you go and how quickly you can accelerate. If it breaks, you don't go anywhere at all.


Why Can't You Ignore Transmission Issues?


Replacing a transmission can only really be done by a skilled mechanic. This means that, along with potentially having to spend several thousand dollars on new parts, you'll also have to pay high labor costs to get the new transmission fitted to your car. Not such good news for those of you who want to be on the road rather than at home waiting for your vehicle to be repaired.


How Do I Know if My Transmission Is Faulty?


Good question. To make things easier for you, we've compiled a list of the six most common warning signs that you need to look out for. Let's take a look at each in a little more detail.


1) Constant Noise, Even in Neutral

If you hear a constant whining or humming sound when the engine is running, this is a warning sign that your transmission needs some attention. If you're not sure if what you're hearing is normal, shift to neutral to see if the noise goes away. If it doesn't, book your car for a service appointment as soon as possible.


2) Leaking Transmission Fluid

Your transmission needs to be lubricated for it to work, so make sure to keep an eye out for any puddles or drips coming from the underside of your car. They'll be an early warning sign that your car may need a trip to the garage.


3) Grinding or Shaking

This is a critical sign that something is drastically wrong with your transmission, particularly if it happens when you switch gears. The problem with ignoring this type of symptom is that you won't just be damaging the transmission — you could also be doing all sorts of unseen damage to the rest of the engine system.


4) Burning Smell

If your transmission is struggling to perform adequately, then it may start to overheat. No amount of topping up the fluid will cure this type of overheating. It's likely due to a more complicated issue that has to be remedied. Listen to what your vehicle is trying to tell you and get it checked out by a professional.


5) Delayed Performance

If it takes too long to accelerate, or if shifting from Park to Drive is slow, it's likely a transmission issue. The transmission governs how quickly and efficiently you can shift up or down, so make sure you get it inspected by a professional as soon as possible.


6) Slipping Gears

When a gear slips, you'll find yourself in a lower gear than you intended. This will make the engine suddenly sound harsher because it needs more revs to reach the same speed. Alternately, it may slip to a higher gear. If this happens regularly, chances are it's the transmission that needs a closer inspection.

Now that we've covered the key warning signs, we want to give you a few hints and tips that will help you extend the lifetime of your transmission.


Transmission Maintenance Tips


  • If the Check Engine Light comes on, this could be a sign there's an issue with the transmission — take it to the nearest garage for a closer look
  • Make sure you have your transmission serviced by a professional every 30,000 miles.
  • Regularly check the cooling system for damage and speak to a mechanic about adding an external filter to take the stress off the cooler lines.
  • The most common transmission issue is low fluid. Knowing how to check your transmission fluid level can save you time and money.
  • Your transmission fluid should be red. If it's dark brown or black, then it's burnt and needs replacing. Ask your local garage about synthetic fluid, which is less likely to degrade and break down.


Deciding Whether to Replace or Rebuild


Replacing vs. rebuilding your transmission is a decision you may have to make. The best course of action will depend on the current state of the transmission. Make sure you ask your mechanic which option they would advise. If a simple repair gets you another 30,000 miles, then choose that. However, if a complete rebuild costs you nearly as much as a new transmission, you might want to think about swapping it out.


Final Thoughts


Now that we've told you all there is to know about the six transmission issues you cannot afford to ignore, you'll know the warning signs to look out for — just what you need when you want to avoid costly repairs and breakdowns.


Visit Our Shop!


We’re here to help you stay on the road. The best way to do that is in a properly serviced, safe car. If you think your car’s transmission may need an inspection or if you have any other concerns about your vehicle, contact us today to set up an appointment.

Recent Posts

Transmission Solenoid Problem Banner
By AAMCO Lake Forest December 29, 2020
When your vehicle’s solenoids begin to wear down or fail, you may discover transmission issues that can prevent your car from operating smoothly — or in the worst case, stop moving entirely. Avoid costly transmission solenoid problems by learning what solenoids are, how they operate, and when to seek help.
Orange Hazard  Road Sign placed on the road, with a car driving away from it in the background.
By AAMCO Lake Forest November 30, 2020
Is your car getting a bit hot under the hood? It may be your transmission. Here are five reasons your transmission may be overheating — and how you can prevent this costly issue from happening.
Clutch Banner Image
By AAMCO Lake Forest September 21, 2020
What causes transmission failure, what can you look out for, and what can you do to avoid failure on your vehicle?
Brake Repair Banner Image
By AAMCO Lake Forest July 30, 2020
August is National Brake Safety Awareness Month - Do you know the common signs of brake failure? Stay safe on the road this month by learning the warning signs of brake wear, and how you can keep your vehicle running with these maintenance tips.
By AAMCO Lake Forest May 12, 2020
Woman driving a car from the perspective of the passenger, a sun flares in the rearview mirrow.
Hand holding a clutch, shifting between gears
By AAMCO Lake Forest December 4, 2019
Being one of the most important components of your vehicle, understand the signs and causes of a transmission slipping that shouldn't be ignored.
AC vents of a car
By AAMCO Lake Forest November 9, 2019
A freon leak is not the only reason why your AC could be broken. Keep reading for AC problems: 7 common reasons why your car's A/C isn't working.
Gears
By AAMCO Lake Forest May 2, 2019
If you have an automatic transmission, here's what you need to know about getting it serviced. When, why, and how much automatic transmission service costs.
CVT Transmission Banner
By AAMCO Lake Forest February 6, 2019
If you have a continuously variable transmission, it needs a different kind of service than an automatic transmission. Learn about CVT transmission service.