× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1986 Mercury Marquis 3.8L Excessive Emissions
Posted to Ford Driveability on 7/28/2000

Vehicle runs ok at all times, but is running rich at idle (ok at cruise). PCM will not output any koeo codes, but does give me codes 12(idle not within limits) and 58(Idle Tracking switch circuit). ISC motor and Idle Tracking switch are ok. PCM is apparent...

  Related Documents & Media  1986 Mercury Marquis

 
Message Closed w/FIX

car Vehicle Data

1986 Mercury Marquis

VIN 1MEBP8935G
Engine3.8 L / 6 cyl
EmissionsCa Emissions
SymptomsExcessive Emissions
OccursHot, Idle
Message Closed w/FIX

car Vehicle Data

1986 Mercury Marquis

VIN 1MEBP8935G
Engine3.8 L / 6 cyl
EmissionsCa Emissions
SymptomsExcessive Emissions
OccursHot, Idle