Q: Vehicle runs roughly, shudders and rattles, vacuum leak

asked by on

After having a tune-up done on my car, it started running roughly and making rattling sounds. It also shudders quite a bit. After having diagnostics done, the codes P0303 and P0305 popped up. There is also a vacuum leak found. What has caused this and how can I fix it?

Thanks for writing in about your 2000 Chrysler Cirrus. When the coils were removed to replace the spark plugs, they should have been inspected for oil getting on them from a leaking valve cover. The leaking valve cover may leak oil into the spark plug holes shorting out the plugs. The code P0303 is for cylinder 3, and the code P0305 doesn’t apply to your engine since this code would be for cylinder 5, and you only have 4 cylinders. If you need help having this taken care of, a certified expert from YourMechanic can come to your car’s location to determine why your vehicle is running rough.

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. Vehicle runs roughly, shudders and rattles, vacuum leak

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: Hey Dan, I would like to get a quote on, spark plugs and spark plug wire replacement. Thanks

Hi there. In order to provide you with an accurate quote, we need you to fill out a request for spark plug replacement; as we need to collect additional information from you. Once we receive your info, and you receive...

Q: How much to replace a vacuum hose that's causing a vacuum leak

There is a 1 hour minimum charge for a service for a service call in most cases. If the hose is a factory preformed hose then it may have to be purchased from a dealer and then installed for you....

Q: Water pump rattles, but stops once car is warmed up.

It sounds like the impeller shaft inside the water pump has been bent or broken. If this were the case the noise would exist when the engine was cold, then when warmed up and coolant starts to pass through the...

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 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...
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.