Buick Encore Not Accelerating – What Could Be Wrong?

Whether you need to keep the car running or start from a red light or stop sign, it can be quite frustrating if your Buick Encore is not accelerating properly. Unfortunately, there could be several reasons why your Encore isn't accelerating. Below we have listed the most common issues for acceleration issues.

The following are possible reasons why a car may not be accelerating properly:

  • Fuel low
  • Clogged fuel filter
  • Bad gas
  • Faulty fuel pump (pump not working correctly)
  • Faulty throttle position sensor (TPS)

If your Buick Encore isn't accelerating properly, it can be frustrating to diagnose the culprit. It could be an easy fix that can save you a lot of money, or it could cost you more than what you're willing to spend. Either way, it doesn't hurt to have your vehicle checked out by a professional — it may just save you a lot of time and money in the long run. Before you contact your local mechanic, please read on as we dive into each possible scenario as to why it's not accelerating correctly.

Buick Encores parked and for display at a Buick dealership, Buick Encore Not Accelerating - What Could Be Wrong?

Buick Encore Not Accelerating - What Could Be Wrong?

There are several reasons why your Buick Encore isn't accelerating. Below we will further discuss the possible culprits.

Fuel Low

If the car isn't accelerating properly and there is a low fuel light on, you may be running out of gas. Check the needle on your gas gauge, and if it has dropped below a quarter of a tank, fill up right away. If there is plenty of gas in your vehicle, the culprit could be a clogged fuel filter which we'll discuss next.

Clogged Fuel Filter

If you are experiencing any loss of power, even when accelerating at high speeds, your fuel filter may be causing the problem. If this is the case, we recommend having a new fuel filter installed.

The fuel filter can be found right underneath the fuel tank. Your Buick Encore should have a capacity of 15 to 20 gallons for gas, so you'll need about 1/2 a tank of gas (or more) to get the job done. If not, stop by your local service station before you head out on the road.

A mechanic checking the fuel filter of a car engine

Bad Gas

If you have a low fuel light on, it's possible that your Buick Encore is not accelerating properly because of bad gas. If you recently put new gas into the tank and started experiencing issues with acceleration, then most likely, there's some water or dirt in the tank. You could check to ensure you're getting a good gas flow from the tank to the engine. If there's a fuel line leak, it could be coming from a cracked pipe or even the pump itself. Make sure that all of these components are free of rust and dirt before filling up again.

Faulty Fuel Pump

If you're experiencing fuel issues and your Buick Encore is not accelerating properly, the fuel pump could be a problem. The fuel pump is on the left side of the engine bay, and it should be right behind the black air box for your intake system. Once you've located the fuel pump, make sure that it's free of dust or dirt.

This can prevent gas from flowing correctly to the engine, and it could even cause the pump to burn out. After checking that everything is free of dust or dirt, you may need to replace your fuel pump for your Buick Encore to accelerate properly again.

Faulty Throttle Position Sensor (TPS)

If your Buick Encore is not accelerating correctly and you hear a clicking sound when trying to accelerate, the problem may lie with your throttle position sensor. The TPS can cause issues with your car's acceleration if it has failed or is no longer working correctly. You'll want to take your car to a professional technician to have this issue resolved. In addition, the TPS will need to be replaced if it fails or doesn't respond well to your throttle inputs.

Buick Encore hesitating when accelerating - what could the issue be?

If you are experiencing hesitation when trying to accelerate in your Buick Encore, the problem could be with the throttle position sensor (TPS). The TPS can cause issues with your car's acceleration if it has failed or is no longer working correctly. You'll want to take your car to a professional technician to have this issue resolved. The TPS is responsible for figuring out how much the throttle body is open.

The throttle body is the movable part of your car's engine that helps control its speed. If you are experiencing problems with your Encore while trying to accelerate, you may need to have your TPS replaced before things get worse, leading to other issues down the road.

The throttle body is the area you can access by removing the intake system. You'll want to remove the bolts around the throttle body with a socket wrench and then disconnect all of your electrical wires attached to it before removing it from your car's engine bay.

Does the Buick Encore have transmission problems?

Buick Encore transmission problems are numerous and can cause delayed shifts, slips in the gears, or terrible noises. Even though you may not experience these issues right away, they can come up. Getting your car serviced is essential to prevent major issues from happening down the road, such as hard shifting, which could lead to jerky driving conditions.

It also leads towards things getting stuck, such as an old torque converter that might give out all at once, causing other parts of your engine drive train system on top of it to go haywire.

If you are experiencing hard or delayed shifts in your Buick Encore, make sure that everything is well-maintained, like sticking parts, which could lead to more problems down the road if they continue to go unnoticed.

How do you check the transmission fluid on a Buick Encore?

Remove the dipstick from your car's transmission and wipe it clean. Fully reinsert it, then pull it back out. Read the dipstick to determine the fluid level.

After checking your fluid level, if you find that it is low or below what it should be, you will need to add an Amsoil Dexrong ATF transmission fluid to bring it back up. Be sure not to overfill the transmission because this can cause issues as well.

You want to make sure that you are checking the transmission fluid on your Buick Encore every six months or so. It's recommended that you always use Amsoil Dexron III ATF in your transmission because it will help keep everything working properly.

Transmission fluid is important at a certain level because if it doesn't have enough fluid, the transmission will not function properly. In fact, low transmission fluid could lead to catastrophic failure. When you check your fluid level, be sure to check it at a low temperature with the engine off. Checking it while the car is running or while it's hot can cause the reading to be inaccurate.

In Closing

We know it's not fun dealing with car issues. And in modern cars like the Buick Encore, there can be a host of potential culprits behind acceleration issues. Hopefully, this article gives you some insight as to what the problem could be. But the best thing to do is to contact our local mechanic or dealer for more information.

If you enjoyed this article on the Buick Encore, you might also like:

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So how do you like your Buick Encore? Leave us a comment below!

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