P CODES (POWERTRAIN) P1500 - P1599 P1504 Questions

Error Code P1504, What Does It Mean? I Understand That It Is Something Related To The Iac Unit But It Is Not Very Specific, Is There Any Way...

Car Sat For Six Years, Drained And Flushed Gas, New Filter, Charged Battery, New Oil, And Filter. Start Starts, Idles At 900 Rpms. Short...

The Scanner Showed P1504 When Testing, Reading Man. Cont. Spd. Idle Speed Control Auxilary Inputs. Replaced The Isc But Still Reads The Same...

My 1996 Mercury Marquis V8 Starts Fine...if You Give It More Gas Than An Idle. It Accelerates Fine, But When You Let Off The Gas It Dies...

I Have Problem With Codes Cool Engine Need To Keep My Foot On The Gas For Up To 10min. After That Ther Is No Problem Runs Good, I Check The...