× 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: 99 Tacoma P0172
Posted to Technical Discussion Forum on 9/9/2005

[...trimmed text...]

Not knowing exactly how many GPS should be flowing, we do know fuel trims indicate a richer mixture at idle and mixture improving as RPM and load increase. I don't see fuel pressure as a problem, nor ... Login to read more.