Q: Engine rattling, shaking and loss of power

asked by on

Hi. My car has gone around 120,000 miles. The car has some engine malfunctioning lately. When I started the car up the other day, there was this rattling sound and the car was shaking. I drove it and these issues wouldn't go away. The dashboard showed the check engine light on as well. The engine seems to be losing power and the rattling is becoming worse. It has difficulty accelerating. Right before this happened, I had the oil changed. Also, the outside temperature was low. Can that cause these problems? Thanks.

The VANOS unit or solenoid can cause a rattling sound from the engine. The VANOS is a camshaft timing system which runs off of engine oil pressure. If the oil is the wrong viscosity or the system has a buildup of sludge which causes the system to cavitate, it will make a rattling sound and store faults which will cause the Check Engine Light to illuminate.

You will want to have the fault codes read out. If there are camshaft position faults or any VANOS faults, then they would further support this theory. In some instances, an engine flush can correct sludging issues in the camshaft timing adjustment system. Replacing a VANOS solenoid or a camshaft sensor is not a difficult job, but replacing a VANOS unit could be an issue as it is an involved repair requiring special tools.

You may want to enlist the help of a mechanic such as one from YourMechanic, who has the tools and expertise to complete the diagnosis and repair, starting with a diagnostic of your Check Engine Light illumination.

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. Engine rattling, shaking and loss of power

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: The car is hard to start after sitting for an hour

Hello. There are several different things that could be causing your starting issue. There could be a bad spot in your starter which would make the vehicle hard to start. You could have an intermittent fuel pump problem which would...

Q: will a bad compressor cause the fan to not come on? No fan, no cool air?

The A/C fan for the condenser will not come on if the A/C compressor does not come on. The fan will only come on when the pressure of the A/C system is detected. This is likely why it is not...

Q: Would a clogged catalytic converter burn a hole in the manifold

Hi and thanks for contacting YourMechanic. The hole in the manifold is a sign of something coming out of the engine, either a piston or a valve. If the manifold is the intake manifold, then there could be a burned...

Related articles

P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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...