Skip the auto shop - Our mechanics make house calls

Q: My Dodge Neon is misfiring on cylinder #4. The Check Engine Light is on, code is P0304.

asked by on

Engine shakes violently at times, mostly at stop lights or when idle. Engine light comes on and sometimes blinks. Added a quart of oil and engine light went off..then came on again next day. Drives mostly 2 miles back and forth to work on highway. Doesn't want to increase/gain speed when engine light is on. Engine light has tendency to stay on. I replaced the spark plugs, the wires, the coil, performed an air induction and fuel induction, but car is still misfiring on cylinder #4. Any recommendations or suggestions to pinpoint how to fix??

My car has 111245 miles.
My car has an automatic transmission.

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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. My Dodge Neon is misfiring on cylinder #4. The Check Engine Light is on, code is P0304.

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: My car cuts off without any warning signs and it was hard for me to turn the steering wheel. It was smoking a little under the hood.

Hi there. The issue may be that when the vehicle was filled up, there may have been trash in the gas tank and it may have been stirred up into the fuel system which may have clogged up the fuel...

Q: Power windows not working.

It is possible that you have a blown the fuse for the power windows. If it is possible for you to easily replace this fuse, it will be shown in the owner's manual of your vehicle. If you are uncomfortable...

Q: Running out of ideas of why my car wont start

This may be a variety of potential issues. I would start by checking the oil to see if there are traces of water in it. Also, check the water to see if you find any trace of oil it it....

Related articles

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...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
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.