tique79 Posted April 15, 2008 Report Share Posted April 15, 2008 Cleaned throttle body on our 99 Concours and received a service engine light upon restarting. Codes pulled were po103 (MAF sensor circuit high frequency), po111 (IAT sensor performance), po113 (IAT sensor circuit high voltage). Engine stumbles upon acceleration and WOT. What is this saying to me and what part needs to be replaced? Link to comment Share on other sites More sharing options...
PAUL T Posted April 18, 2008 Report Share Posted April 18, 2008 I do not have a 99 manual but the problem sounds like it could be what you cleaned the throttle body with. Were you having these problems before you cleaned it? Link to comment Share on other sites More sharing options...
Logan Posted April 19, 2008 Report Share Posted April 19, 2008 I've looked at the manual. I cannot make a related connection between these 3 codes. Either some wiring was left undone....or....some connection is not there. Dont know. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
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