× 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: Ford 4.6 backfire on startup & wierd fuel trims
Posted to Technical Discussion Forum on 11/28/2007

Have you tried clearing the KAM to set the BARO to a default value (usually will be about 152)? It does use Baro during crank for fuel calculation because there isn't enough air flow through the MAF under crank to make the MAF reliable. Login to read more.