× 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
2007 Ford Mustang 4.0L Excessive Emissions, MIL Lamp on
Posted to Ford Driveability on 6/26/2024 17 Replies

Help! Thanks in advance. I tried smoking the intake system but found no leaks. If I ad propane to the intake the fuel trim will go negative but never correct close to 0, it will stay close to 10 on the LT trim for both banks. I sprayed water around intake ...

17 Replies Received (View Replies)

  Related Documents & Media  2007 Ford Mustang

 
Message Closed w/Summary

car Vehicle Data

2007 Ford Mustang

VIN 1ZVFT80N67
Engine4.0 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways
Misc.Ad on Stuff K&n Air Filter, Air Tube, Throttle Body, Pypes Exhaust Etc.

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)
Message Closed w/Summary

car Vehicle Data

2007 Ford Mustang

VIN 1ZVFT80N67
Engine4.0 L / 6 cyl / GAS
Trans5-speed Automatic (Electronic)
DeliveryFuel Injection / sefi
EmissionsOBD-II Compliant
SymptomsExcessive Emissions, MIL Lamp On
OccursAlways
Misc.Ad on Stuff K&n Air Filter, Air Tube, Throttle Body, Pypes Exhaust Etc.

Trouble Codes

P0171Fuel System Too Lean (Bank 1)
P0174Fuel System Too Lean (Bank 2)