Q: Car sluggish and hearing noises from engine

asked by on

My car continued to run sluggish even after a tuneup. It also now makes strange noises from the engine and has a loss of power. Then replaced the alternator, and that didn't work.

Hello. The most common causes of low power and noise on this engine are either a failing catalytic converter, or more commonly, a failing timing chain or variable timing actuator. Both of these are very common problems with this engine. If the noise is a rattling or ticking noise, then expect the timing chain or timing actuator to need replacing. If it is a moaning type of noise or a rattling from under the vehicle, then it may be the converter. A mechanic would need to pinpoint the location of the noise to know where to start looking. If you did not want to tackle this yourself, consider YourMechanic, as a certified mechanic can come to your home or office to find the issue with your car.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Car sluggish and hearing noises from engine

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

Get a quote

What others are asking

Q: Car won't charge after replacing battery and alternator

From the looks of it, you have done a lot of work on your Mustang. I can understand how frustrating it must be to get this far but still be experiencing problems with charging. The first question I would ask...

Q: Erratic shifting

Hello. It would appear that these 2 problems may perhaps need to be addressed separately. If these problems began after you replaced a sensor, then it may be possible that the problems are related to the repair. I would recommend...

Q: On starting excessive grinding

First thing to check is the engine oil level to make sure the crankcase is full. While checking, observe the condition of the oil on the stick. The starter assembly can become very noisy as the unit ages and begins...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...