Q: Car shuddering

asked by on

The VSA and Check Engine lights are on. My car is not accelerating properly, and it shudders and shakes.

When the vehicle stability assistance (VSA) control module detects wheel spin, it sends a request to the modulator unit to apply brake pressure to slow the spinning wheel. At the same time, it sends a signal to the traction control unit to reduce engine power. By doing this, the VSA system improves vehicle stability. If the VSA control module detects a problem in the system, it will illuminate the VSA light. On the other hand, the Check Engine Light comes on when the powertrain control module (PCM) has detected a problem in one of the powertrain systems. The symptoms you are experiencing (shuddering and poor acceleration) have dozens or potential causes. Retrieving the corresponding diagnostic trouble codes with dedicated equipment will help analyze both problems. I suggest having a professional, such as one from YourMechanic, service your vehicle to determine what repairs are needed to clear these lights.

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 shuddering

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: Q: No brake pressure

Hi there. If the brakes were working fine prior to replacing these parts then you may have air trapped in the system or the calipers may not be functioning correctly. I would first make sure that the calipers are installed...

Q: how do I get my rack and pinion to stop grinding?

The noise could be from the pump, the steering rack and possibly even the upper strut bearing mounts which come into play when you turn the wheels. The increased effort in steering could be due to an improperly tensioned drive...

Q: RPMs are fluctuating during idle - 2014 Nissan Altima

Hello. The first thing to check is what problem codes are setting the Check Engine light. The throttle position sensor, a clogged fuel filter, or dirty throttle body could produce the symptoms you describe. Most auto parts stores will read...

Related articles

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.