Thanks for your question. It sounds like you have an inlet air leak going to your throttlebody. Throughly check around the air cleaner box and around the mass air flow sensor for lose clamps. Check to see if any hoses are off too.
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FORD MOTOR COMPANY CAR AND POWERSTROKE SPECIALIST FOR OVER 16 YEARS. ASE MASTER SINCE 1991. CURRENTLY WORK AT A MAJOR FORD DEALERSHIP. GIVE ME YOUR FORD PRODUCT QUESTIONS, IF I HELPED, PLEASE HIT THE ACCEPT BUTTON. EXPERTS QUESTIONS ON FORDS WELCOMED

