Hi,

since I want to turbo my car, I made a compression test today to see if he will handle it... 200-200-205-205. That seem to be great numbers. The problem is... now after the test I got a check engine cell, the cell light when the car start and still. I've done the compression test by disconnection the 3 relay under the hood. trottle WOT and crack... after I got the number just put my plug back and restart de car... all normal, good idle but CELL!!!! Ive test drive if for 20min... no problem but the cell is there. WTF ? anyone have an idea?

thanks a lot!

Do the keydance and see what code its throwing. Or make sure everything is pluged back in right and unhook your battery for a bit and see if you still get a CEL. When I check mine I unplug the coil pack wire. Can't tell if I get a CEL or not, its been on since I bought the car 5 or 6 years ago.

Problem solved. In fact, when disconnect MFI relay you will got a cell. Just disconnect the neg battery pole... wait some time and replug it. ECU reset and no cell now :0

Thanks for the PCM code :)