I built a radio-shack code reader, as detailed on the site...i am trying to find out where the exhaust smell i have is coming from (see my post Running with a bad O2 sensor).

anyhow, something not right . when i press the button while the reader is connected to the car, and while the car is running, the led comes on while the button is pressed. it goes off when i release the button. I did not get any single led flashes for no error codes, but i did get some codes nevertheless:

on pin 8, i got 8 flashes......

on pin 14, i got 2, 5, 9, 11 .....

when i looked up the explanations, none of them seem to make sense to me....

is my reader messed up or is this normal? and what is the deal with the codes...

need some help guys, thanks!!!

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1993 300E, 2.8 M104 .....