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Re: 03 LT EXT OBDII Not working
Well, it's obvious a P0300 is set here......when a misfire is so bad, that it could harm the cat, the CE light will flash.....when you ease up on the gas, and the misfire lessens , the light goes out....
What kind of code reader do you have? Some can't read a system if it is a CAN run system.....Did it ever work on this vehicle before?
What vehicle does your wife drive?
Places like autoZone will read the code for free....
But I think your main problem is a bad misfire,,,,,,could be secondary ignition or an injector problem....
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