Skip the auto shop - Our mechanics make house calls

Q: Mileage is incorrect, Check Engine Light is on, and the car shakes - 2004 Mitsubishi Galant

asked by on

Hi when I brought the car the mileage was 200,000 something. I recently got an oil change and noticed the mileage says 82,000. How is it possible for it to change like that? Also my service engine soon light is own and I was told it was the oxygen sensor which I have scheduled to have fixed by you guys this Sunday. I also know I need new tires and the car shakes when I start the car when I go over 60 mph. I read that it has to do with the tires and spark plugs. Which is more important to get fixed first?
My car has an automatic transmission.

A: Hello. The mileage may read this because it...

Hello. The mileage may read this because it may have been switched from kilometers to miles. As for the shaking, if it occurs more at higher speeds, then it is more than likely due to the tires and not the spark plugs. If the plugs were bad, you would get it more often at all speeds. If the tires need to be replaced, then that should be done before a tune up.

I recommend having one of YourMechanic’s certified technicians perform an inspection to determine why the car is shaking and why the Check Engine Light is on.

Was this answer helpful?

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: In my car i have been facing problems like i am not getting the maximum mileage that can be attained by the car what can be chan

Hello. Unfortunately the reason for your low mileage is your driving style or conditions. In stop-and-go traffic, the mileage will not be as good as cruising on the highway at 55mph. Using as little throttle as possible will help you...

Q: Fuel door stuck.

How do you open your fuel door? Is there a button that pops it open or to you pull a lever? It is possible that there may be a problem with the switch or cable that opens your fuel door....

Q: location of starter relay

Hi there. I think you'll find a 2003 Mitsubishi Galant service and review manual to be very helpful in locating your starter relay. It will also give you step-by-step instructions for removing and replacing this component as well if that's...

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 Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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.