Most parts stores are lost if it isn't an OBD2 system.
It's really simple.
Within five seconds, switch the key from off to the run position 3 times (on, off on, off, on. The 3rd time, leave it in the run position (engine off).
The "check engine" light will flash.
Each code is a two digit code, so a code 23 would be FLASH FLASH (pause) FLASH FLASH FLASH (longer pause before next code)
The system will end with a code 55 which is normal.
Write down the numbers as the occur.
NOTE: A code 33 is normal on earlier models without AC, so don't be alarmed. As I mentioned, a 55 will be the last one you see.
Do this and let me know what you find. It's going on midnight here, so I have to get to bed, but I'll be back tomorrow night.
Sunday, October 4th, 2015 AT 8:32 PM