× 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
1990 Ford Aerostar 4.0L Misfire
Posted to Ford Driveability on 8/31/2004 12 Replies

upon roadtesting vehicle after repairs with snap on scanner.

noticed when cruising at 60-65 mph at steady throttle for 2 miles system would drop out of closed loop and o2 reading would be fixed at 135 to 145 mv. if throttle is tapped,system would resume close...

12 Replies Received (View Replies)

  Related Documents & Media  1990 Ford Aerostar

 
Message Closed w/Summary

car Vehicle Data

1990 Ford Aerostar

VIN 1FMDA41X8L
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / MPI
Emissions US FEDERAL
SymptomsMisfire
OccursUnder Load, Cruise
Misc.0-58K-R00 Calibration #
Message Closed w/Summary

car Vehicle Data

1990 Ford Aerostar

VIN 1FMDA41X8L
Engine4.0 L / 6 cyl / GAS
Trans4-speed Automatic
DeliveryFI / MPI
Emissions US FEDERAL
SymptomsMisfire
OccursUnder Load, Cruise
Misc.0-58K-R00 Calibration #