Q: poor acceleration check engine

asked by on

My BMW has 106,000 miles on it. The check engine light came on. The spark plugs are original and are rated for 100,000. I am experiencing poor acceleration, it's like I am driving a car with a turbo. It starts off slow and then all of a sudden it goes like the wind. There is a slight rattle under the hood when I am taking off, but not when I'm driving.

You will want to have the catalytic converters checked. The 540’s are notorious for the catalyst inside the catalytic converters breaking apart from the outer wall of the assembly and rattling around, especially upon take off. This will also create increased exhaust back pressure which could give you that lagging feeling on acceleration. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the tools and expertise to diagnose and repair the acceleration and rattling issue.

Was this answer helpful?
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. poor acceleration check 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: Engine died then started up fine

This problem could be unsafe for you. I recommend contacting a certified mechanic, such as one of the mobile mechanics from YourMechanic, to thoroughly inspect your vehicle at your home or office. They can do a thorough check for possible...

Q: Anti theft light still blinking while car is running, unable to shift gears.

You may have a problem with the immobilizer system. I would suggest using a different key to see if the problem is one of the keys having a problem or the vehicle unit having problems recognizing the keys. If only...

Q: My 2000 GMC Sierra 5.3 will start and idle rough for about 2 seconds then dies. I already replace the fuel filter. Clean the injec

Claimed by Jeff Engstrom

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...