Any light's lit on the instrument cluster ? check engine etc..... any messages ? reduced engine power . Taking it and having diagnostic testing done is your best bet. Unless your prepaired to replace a bunch of parts . There are many electronic sensors on your vehicle that can cause drivablity problem's when they act up . . Your vehicle also has electronic throttle control which can cause these type problems . You can add all the gas addatives you like ,and it's not going to change anything . Hooking up a professional type scan tool an looking at system data parameters ,checking for DTC'S - diagnostic trouble codes should always be the first step in any computer controlled vehicle . Checking fuel trims ,short an long term fuel trims . Is the computer add fuel to compensate for a lean condition or is it taking fuel away to compensate for a rich condition ? What are the O2 sensors doing ? Switching normally , stuck rich or lean . What's the mass air flow sensor show , coolant temp .
002 Fuel System Tests Start Here
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