i put in a cold air intake a month ago and the light came on. it went away a week later, eveything has been cool. i need an oil change, im about 100miles late for that, im going to get it done tomorrow. could that be it? that orange check engine light is some scary shish.

 

The Check Engine Light is evidence that something is wrong. That
"something" may be any number of things, some major and some minor. It
might be nothing more than a loose fuel filler cap. The Engine Control
Module (the computer) detected a problem and turned on the Check Engine
Light. At the same time it stored one or more Diagnostic Trouble Codes.
Get someone to do a DTC readout for you. This is not a big deal, does not
require specialized "dealer only" test equipment, and should take less than
an hour. When you know the stored DTCs, you will have a fair idea of what
repairs are needed.

If you like to do your own "wrenching" you can do the DTC readout for
yourself. Go to your public library and borrow a Chilton's or Haynes
manual for your vehicle. It contains detailed instructions and a table
which "translates" the numerical codes into words. No special tools are
required.

You will also find instructions to do a DTC readout and reset
the Check Engine light at Steve Cutchen's excellent MaxFAQs page:
http://web2.airmail.net/scutchen/max_faq/

The DTC "translations" are found at:
http://web2.airmail.net/scutchen/max_faq/engcodes1.gif
http://web2.airmail.net/scutchen/max_faq/engcodes2.gif