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Hey all, I have a 2001 24v and a few months ago i started noticing the throttle acting weird / revving up and letting off on its own a tiny bit when cruising around 55mph, I would then put it on cruise control and wouldn't notice it. Then the other day I noticed after driving on the highway/ with cruise control I'd get off to get fuel and the truck would be idling high around 1k until I shut it off and re start then it would be fine. Finally on the trip home I was running 70mph with cruise control on and the cruise control cut off and the throttle went unresponsive and threw a check engine light. I did the key thing to get the codes on the dash and got p0500,p1693,p0121,p0523,p0602. I'm running a Smarty and from my uneducated google knowledge I'm assuming I have a bad apps and if I replace it I should be good to go. My question for all of you is, is my assumption of having a bad apps correct, is there anything else I should look into from those codes. Also if I do need a apps where should I buy it. My brother inlaw is a self employed mechanic and seems to get parts cheaper if thats a consideration, i'm pretty sure thats just threw people he has accounts with though such as orileys, napa places like that. All your help and knowledge would be appreciated. Thank you.