Question about 2003 Mitsubishi Galant

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The "Service Engine Soon" light came on in my 2003 Mitsubishi Galant. Is this an emission related issue?

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More than likely it is, but you will need to have the codes scanned and description of that code to know what the cause is.

Posted on Feb 01, 2009

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Posted on Jan 02, 2017

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2 Answers

How to replace 2003 Mitsubishi Galant ES service engine soon light bulb


most people would like it that way , but how do you know it is needing replaced .if you get it serviced properly it should never be needed

Sep 29, 2017 | Mitsubishi Cars & Trucks

1 Answer

Engine starts then die when idling, changed fuel pump and also magnets (COILS)


I had the exact same problem with my 2003 Galant. The above solutions may be correct but try some other things first.
1) start car and with engine idling turn on the AC. If the rpm's drop and don't come back up or the car dies, it is probably a dirty max air flow sensor. This is an easy fix even for a novice. Many you tube videos to show you how to clean.
2)check spark plug wires and boots. Cheap solution and a likely culprit.
3)Is your service engine soon light on? Could be an emissions problem. If you are able to drive the vehicle and notice that even at highway speeds you slow down with pressure on the accelerator you may have to replace something in secondary emissions control. Not likely.

If it is a vac. hose leak you should be able to hear it and locate it with your hood up and engine running.

Mar 11, 2014 | 2003 Mitsubishi Galant

1 Answer

My service engine soon indicator light is on what could be the problem


It could be a any number of problems or a combination thereoff. It could be a sensor problem or it's related wiring or it could be an actual problem with the engine that a sensor may have picked up. Are there any symptoms? Your best bet is to have you vehicle diagnose by a professional. But if you get the vehicle scanned and report the codes I'm sure there's people on fixya willin to help me included.

Jun 29, 2012 | 2003 Mitsubishi Galant

1 Answer

No Service Engine Soon seen for code P0442


code p 442 refers to evaporative emission (EVAP) system---small leak detected
it also refers to large leak detected --fuel cap off/loose === causes hose/connection,-- intake leak--EVAP canister---EVAP canister purge valve --mechanical fault --- EVAP pressure sensor

Oct 17, 2017 | Mitsubishi 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

3 Answers

Temp gauge normal when driving but overheats at a stop


how is the gas mileage.... possible catalitic converter is plugged. Is the check engine light on. or service engine soon?

let me know

Jun 16, 2009 | 2003 Mitsubishi Galant

1 Answer

My service engine soon light came on 2003 gallant this morning while it was warming up. Is this a service notice that needs to be done or is it acutally the computer telling me something IS wrong? service...


The Service Engine Soon light is a notice from the vehicles on-board computer that a problem has been detected somewhere, and service is required. You can isolate the problem by having the "trouble code" displayed for you at an auto parts store for FREE to determine the exact problem, and possible causes. This should be done FIRST, so that you strategically approach the problem directly instead of spending unnecessary money "guessing or assuming". If you are trying to save a few bucks, you may want to invest in a Chilton's manual for you vehicle as well for step-by-step repair, and diagnostic info specifically for your vehicle. I hope this helps,...and good luck!!

Mar 26, 2009 | 2001 Mitsubishi Galant

1 Answer

Service engine soon-2003 mitsubishi galant, 87000 miles


it might be the a couple of thngs...

1)catalytic converter messed up
2)oxygen sensor before or after the catalytic converter needs to be replaced.
3)belts need tightening
4)your fuel cap has not been well tightened.

go down to a mechanic and have them check your engine light. They most likely will have a computer to check and narrow down what might be the problem.

Mar 16, 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

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