× 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
Re: 85 Ford PFI: Why open loop idle?
Posted to Technical Theory Forum on 4/18/1998

[...trimmed text...]

Phil,

because until you dropped it into gear you were in open loop,its like you said,[...] ECA will go open loop at idle in park,meaning that since the computer is ignoring the O2 it is setting puls... Login to read more.