× 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
1998 Ford Escort SE 2.0L Excessive Emissions, MIL Lamp on
Posted to Ford Driveability on 5/18/2011 9 Replies

Came in for 3% NOx on emmission. 1% is max. typically. Hooked up Modis and Launch. Front O2 reads 0 steady. LT and ST trim reads 0 steady. Rear O2 bouncing around. We've replaced both O2's and used PCM. Backprobed on computer connections, front 02 and rear O2 ...

9 Replies Received (View Replies)

  Related Documents & Media  1998 Ford Escort SE

 
Message Closed w/FIX

car Vehicle Data

1998 Ford Escort SE

VIN 1FAFP15P4W
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways
Misc.P1131

Trouble Codes

P1131Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction
Message Closed w/FIX

car Vehicle Data

1998 Ford Escort SE

VIN 1FAFP15P4W
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways
Misc.P1131

Trouble Codes

P1131Electric Vacuum Pump System Related PGM-FI Sensor Signal Malfunction