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International Automotive Technicians Network
Re: 2001 toyota Tacoma codes Po 171 and 172
Posted to Technical Discussion Forum on 1/20/2007

Andy

Try scoping the MAF and see what the pattern looks like. IATN has a toyota librabry which you can access to find out what a good pattern looks like. Another thing you can do is to take the maf and see if it's got some build up on it . If so you can also... Login to read more.