The check engine light comes on and off every couple of weeks in my 2002 kia rio rxv.
The car is running as normal (no leaks,smells,not over heating etc..). The light will come on and stay on for a day or so, then go off and stay off for about a week or two.
What could this be?
ps...it has regular oil changes, tune ups, it has a new timing belt, gaskets,plugs,water pump and more...
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the check engine light comes on to tell you there is a problem with something the computer controls or receives info from. Have the computer scanned for codes. Once you have those codes post them here and I'll be happy to help you further.
your post is 1 year old. i started helping others 1 week ago. as a fellow rio owner im here to help there are currentl over 5000 un answered posts. if you still need help re-post your problems .its free to get your check engine light checked at most auto parts stores . write down the codes and meanings. 03 kia rio's are blue booked at about $500.
if you re-post with a code you can get faster help. if your car dont have a code . its hunt and guess . my guess would be throtle position sensor,knock sensor or mass air flow
the check engine light is not caused by any wrong fluid level or dirty air filter or anything else like that, it is caused by well over 100 faults that can occur in the computer controlled electronic engine and emission controls, u will need to go to a Kragen or Autozone parts store and get a free OBD 2 fault code test to get the code that set your light.
This could be an O2 sensor or sometimes with lower grade gasoline I have seen different cars act this way. If the O2 is not bad try mid to super gas or fuel system treatment/cleaner to see if there is a change. I know in my area there is mostly 10% ethanol which will lower octane. I hope this helps!
check the fuel line hose near the fuel regulator for wear as they tend to leak or corrode causing a gas smell inside the car. My 2000 Kia Sportage just had the same problem with the gas smell inside the car.