Q: Q: Check engine light on

asked by on

So my check engine light came on Wednesday morning when I was leaving work and I hade it checked to see with the issue is and I was given the code P0303. I was told that cylinder 3 misfired and that it something to do with my spark plug or spark plug wire. So my question is how long can I drive my car until I can get it fixed? I was going to get it fixed on Friday or Saturday. So will my car stop on me or stop starting until a couple more days? What is a general price of how much to get that replace? How long does it usually take?

My car has 166000 miles.
My car has an automatic transmission.

There area number of things that can cause a misfire such as low fuel pressure, vacuum leaks, faulty spark plugs or wires, a bad crankshaft position sensor, bad camshaft position sensor, faulty fuel injectors and many others.

The most efficient way to approach a misfire is to first check for intake leaks causing a vacuum problem which I the most common. The next step is to replace spark plugs which are also a common culprit of triggering this code. Your car may be ok to drive for a couple of days like this, however be reminded that the problem may get worse and the car will drive very poorly.

I would suggest having an expert from YourMechanic come to you home to diagnose your misfire issue. Regular tune-ups and maintenance will also often times avoid these types of problems as well.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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. Q: Check engine light on

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: I have a 2012 Toyota Corolla S. It has less than 50k miles. Is the engine interchangeable with other years of the Corolla or othe

There was a North American production version of the 1.8L engine and a Japanese version. The engines were different (you must get a car that used the EXACT same engine otherwise you will have problems with the compatibility of the...

Q: P0201 p0300 p0301 p0302 check engine light flashing. Good place to start?

Hello and thanks for your question. There is a misfire detected between cylinder 1 and cylinder 2. The codes P0301 and P0302 are directly related to cylinder 1 and cylinder 2. The code P0300 means that there is a random...

Q: To Mechanic: Jay Safford your advice was helpful BUT there is a problem. I do not have the original key. It is lost. I am trying

If you are in doubt about this repair, Inmight recommend having your vehicles ignition switch replaced by a qualified professional in order to ensure that the issue gets taken care of with out any more issues.

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...
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...
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...