Q: Car shudders and loses power

asked by on February 20, 2016

When I am driving on the freeway, the car feels like it is losing and gaining power. And it shudders.

Loss of power Inspection $79.99 - $89.99 Get a Quote

Hi. There are a couple things that need to be checked out. There are various sensors on the car that help keep the engine running by giving it enough air to fully combust all of the fuel. Over time, the sensors can become dirty which will give inaccurate readings or the sensors will begin to fail. The shuddering could be related, but is most likely an issue with wheel balance or alignment. If you need further assistance, I recommend you have a certified technician, like one from YourMechanic, inspect the power issue and suggest an appropriate repair.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Bad clutch in my truck

Hello! Thank you for writing in with this question. This generation of Tacoma has an adjustable clutch pedal assembly. As outlined in the Tacoma service manual, if the assembly is out-of-adjustment, it could cause slipping. A local mechanic (like those...

Why did my slip light and my ABS and brake light come on in my 2011 Honda Accord after replacing my battery

Hello. It is common for these lights to come on after a battery replacement. It is typically due to the fact that the system has lost voltage which causes these computers to set codes. I usually scan the computers just...

Ac compressor clutch isn't engaging on high fan speed setting while it engages on the prior three fan speeds which are all slow.

The blower not working is most likely due to a fault with the blower resistor. When you go to high blower speeds the A/C may disengage the compressor if the cycling switch cycles or the high pressure switch gets over...

2002 s430 mb, code p0444,how many purge control valves and location?

There are 2 purge control valves. The rear valve is located in the rear wheel well (driver side) behind the wheel well panel. The front valve is located next to the ABS unit (driver side) in the engine compartment. ...

Air compressor has seized. Is the car still safe to drive?

Your car is not safe to drive since the air compressor is operated by the same drive belt as the remainder of the engine (serpentine belt). Because the AC compressor has seized, this could cause the belt to lock up...

Engine light lids

The knock sensor is located on top of the engine beneath the intake manifold which must be removed to gain access. With regard to diagnostic trouble code P0325 that code does not mean the knock sensor has failed. All that...

Fan blower won't work

If your blower does not work at all, there could be several issues. The two most common are the blower motor itself begin bad, and the other is the blower motor resistor. The resistor is what controls the speeds of...

What does the Econ mode indicator light mean?

Your car offers a couple of different operating modes. Normal mode is designed for times when you need greater power and performance. However, you can turn on Econ mode to save fuel. When you do, you’ll see the Econ mode...

Low gas mileage

Real world mileage numbers very rarely stack up to those advertised by the manufacturer, but 13 MPG does seem very low. There are several things you can do to improve your mileage. First, make sure your tires are properly inflated...

Related articles

The 10 Transmission Problems to Never Ignore
There’s nothing quite like transmission problems to stress out the average car owner. They are, at best, inconvenient and, at worst, very expensive. Proper...
Symptoms of a Bad or Failing Universal Joint (U-Joint)
Common signs of a faulty u-joint include a squeaking noise, clunking sound when shifting, vibrations in the car, and transmission fluid leaking.
The Top 5 Selling Cars in Arizona in 2012
Depending Depending on where you live in Arizona, the weather is either arid or there may be periods of heavy snow – such as in the mountain areas. The vehicles that have been popular in previous years for the area,...