Q: Car running rough and shaking

asked by on

My car is running rough and shaking. I went to NTB and from their code readings they stated I am having a misfire. They also found a problem related to the PCM. Additionally, they told me I have a fuel tank, or something of that nature open, and it is affecting my MPG.

Hello. I think the "fuel tank being open" you are referring to is a code for the evaporative emissions (EVAP) system. This system is used to capture fuel vapors and prevent them from entering into the atmosphere. If the powertrain control module (PCM) detects a problem with this system, it will illuminate the Check Engine Light. There are many different codes that correspond to the EVAP system. The cause of these codes can be anything from a loose gas cap to a pinhole in an EVAP line. The EVAP system can also be responsible for an engine misfire if the system purges at the incorrect time. However, your EVAP code and misfire code may or may not be related. This is because there are countless of other problems that could cause an engine misfire. I suggest you have a trained professional, such as one from YourMechanic, diagnose why your vehicle is shaking and replace any failing parts.

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. Car running rough and shaking

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: Heater stops working during idling

Hello. I recommend checking the operation of the thermostat to ensure it opens and closes at the proper temperature. You also could have some air in your cooling system causing the heating system to blow cold at inappropriate times. To...

Q: Error code P0014

Hello, thank you for writing in. The OBD-II error code P-0014 is typically related to an over adjusted timing issue detected by the camshaft sensor as opposed to a damaged sensor itself, which leads me to think that it's either...

Q: Check Engine code p1810

Sent to CS

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...