Question about 2003 Mitsubishi Galant

1 Answer

I have a 2003 mitsubishi galant ES 4 cylinder and have a check engine light message on i had the code read at auto zone and they told me the third cylinder is misfiring and when it idles it jumps around alot and shakes the whole car. And doesnt get any power when trying to drive from a stop position it jumps really bad almost to the point where it feels like it is going to die. it seems to get worst when the air conditioning is running and when the air is on it makes a humming noise really bad constantly, coming from the rear front of the engine

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 44 Answers

Misfire means you need spark plugs replaced. Or spark plug coils.

That's why the whole car starts shaking because its running basically on 3 cylinders and not 4 as supposed. There is no gas compression on the 3rd cylinder because once again the spark plug is "misfiring"

There also might be even a bigger problem which could be the distributor cap where the coils are connecting outside the engine.
once you fix the problem the check engine will turn off immediately

hope that helps.

Posted on May 29, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2003 chrylser sebring wants to stahl mostly in reverse but also while in neutral or when stopped at a light. What would cause this?

There are so many potential reasons why a car stalls. Is the check engine light on? That would indicate a problem somewhere in the car's operating system. It's best to have the car's computer scanned for trouble codes. If any codes come up, they will identify where the problem is. Auto Zone and Advance Auto will a scan of your car.

May 31, 2014 | 2003 Mitsubishi Galant

1 Answer

Service engine light came on went to auto zone they tested machine said number 3 cylinder misfire does this car take spark plugs because i dont see how to install them

It's probably not the spark plug. I would check the coil and injector. these two are the main cause of a single cylinder misfire. ps if the car is running fine now(not missing out) I would have the code erased and wait to see if it came back on.

Jun 19, 2010 | 2003 Mitsubishi Galant

1 Answer

What is code 43 and 41 mean on a L200 2.5 turbo diesel engine management system

you can take your car to auto-zone and they can read the code with the scanner for free. theyll tell you exactly what it means.

Apr 04, 2010 | 2003 Mitsubishi Galant

1 Answer

My service engine light came on took to NTB the

Call Auto Zone and ask what the code means. It could be something simple that you can check yourself, or it may be $$$$$$..

Mar 15, 2010 | Mitsubishi Galant Cars & Trucks

2 Answers

I have a 2003 Mitsubishi Galant ES and after checking my oil, my service engine soon light came on, it is time for an oil change, can this be the reason for the light or is it something more?

if your talking about the check engine light being on, no, it will not come on because of oil service time. you may of left something off. if the dipstick or oil cap is loose this could set a code.

Nov 05, 2009 | 2003 Mitsubishi Galant

1 Answer

Check engine light came when driving in snow on my 2002 Mitsubishi Galant

have car scanned some auto stores such as auto zone / advanced auto scan for free the trouble code gives you a start piont

Oct 29, 2009 | 2002 Mitsubishi Galant

2 Answers

Service engine soon light on, but engine oil and coolant levels are both okay. Last Friday, it was light on, but after added coolant it was off for 3 days. It has been light on since this morning.

Swing by Chief's/NAPA/Auto Zone, etc and have the codes read...sounds like a sensor.

They will check this for FREE!!!
You can't beat FREE!!!
The garages will charge you no less than $89 an hour for "diagnostics"....what a rip off.

Oct 08, 2009 | 2003 Mitsubishi Galant

1 Answer

Where are the spark plugs on the Mitsubishi 2003 Galant ES 4 Cylinder engine?

Just behind the aluminum valve cover...where you pour in your engine oil.

Oct 07, 2009 | 2003 Mitsubishi Galant

1 Answer

Service engine soon.

it mearns that the computer is sensing a failure. You will need to see if it has logged any codes, and troubleshoot from there. You can go to many auto parts suppliers (autozone, ect) and many will read the codes for you, or you can purchase code reader and do it yourself

Feb 23, 2009 | 2003 Mitsubishi Galant

Not finding what you are looking for?
2003 Mitsubishi Galant Logo

714 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts


Level 3 Expert

76848 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8589 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides