× 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 Asto runs poor
Posted to Technical Discussion Forum on 11/20/2002

Hi Gary,

When were these fuel trim readings taken?? Judging by the MAF reading, it was at idle. Have you driven the vehicle down the road with the scanner? You must view the fuel trim values and the rest of the data WHEN the problem is occurring, not just in... Login to read more.