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What does the check engine light mean on a 2003 Chevy Cavalier that is running fine?
Very good possiblity that it's something simple, but it wouldn't be a good idea to speculate without having you first run a diagnostic scan. OBDII compliant vehicles such as yours will tell you exactly the reason for the engine light. Rent, borrow or buy a code reader that gives you the option to read and clear diagnostic codes. If it's a misfire error code you can clear it and see if it comes back. If it's something simple like a throttle position sensor, MAP sensor or Oxygen sensor you can easily solve the problem, but recognize that some of the newer Oxygen sensors might be a little expensive. Check the code first then figure out what to do to fix it. This is what happened to my wife last weekend. It was caused by the fuel cap not being on properly. Check the fuel cap and make sure that it is on securely (tighten until it makes the clicking sound). The "check engine" light will not go out right away. I think the owners manual has a section on this problem. If it's not the fuel cap, then you will need to get the code reader.
What else can I help you with?
Engine is running hot in my 1998 Chevy cavalier?
Did u check your enigine cooling fan?
How do you replace the engine on a 1996 Chevy Cavalier?
check this site out
Why did the ets and check engine light came on together and the back of car jerked in 1996 cavalier?
ets and check engine light on in 98 Chevy cavalier
Is the Chevy cavalier check gaueges light serious?
yea it means your either overheating or running out of gas
2000 Chevy cavalier check engine light on?
could be the oxygen sensor. that's what it was on mine.
Can low fuel make the check engine light on a Chevy cavalier come on?
No, only a problem that effects emissions will set the check engine light.
If your Chevy cavalier ets off light and check engine light are on and the car is running but not very good?
Really have to know what year the car is because these problems vary from year to year.
How do you know if a head gasket is blown on a 1991 Chevy cavalier?
check engine oil for water and check radiator for oil
How do you check the transmission fluid on a 1995 standard Chevy cavalier?
Locate dipstick at rear of engine between motor and firewall, usually has a red handle. With motor running and hot read the marks on the dipstick.
Why would the check engine soon light come on in an 2005 Chevy Cavalier?
If it is easy, your gas cap is not on correctly.
Engine running lean 95 Chevy blazer?
Check for vacuum leaks.
1996 cavalier check engine light is on with the radiator fan running but radiator is cold any answers for this?
Check the fan relay for the 1996 Cavalier. Also, check the coolant sensor, one of these is most likely bad.
