rubles23 Posted June 23, 2022 Share Posted June 23, 2022 I have a 2008 5.4 Lincoln Navigator that Idles around 2000/2100 when in park or neutral. Its has been sitting for almost 3 years with transmission problems. I finally put a used transmission in and seems to be all good except the high idle. It runs and drives fine down the road and when in gear it idles around 800/900. Could the used transmission be causing the high idle issue?? No codes come up. I have checked and found no vacuum leaks. I got the Autel MP808TS scanner and its saying the desired rpm is 2000. What tells the computer to set the desired to 2000? I have seen a few videos about a relearn on the throttle body but not having any luck getting it to change. Any ideas? Quote Link to comment Share on other sites More sharing options...
LHB Posted June 23, 2022 Share Posted June 23, 2022 Idle air control valve? Quote Link to comment Share on other sites More sharing options...
rubles23 Posted June 23, 2022 Author Share Posted June 23, 2022 Im not seeing an Idle air control valve on this vehicle. Even looked up one on NAPA website for a replacement part. nothing comes up Quote Link to comment Share on other sites More sharing options...
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