Re: P0171 Lean Bank 1 Struggle

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Posted to Technical Discussion Forum on 12/20/2011

Dan - hard to keep track of all models and configurations. Please pardon my potential ignorance.

I thought perhaps wrongly that all the 4.3 L's have secondary air injection. "W" included. Here is OEM Pn that supposedly is for "W"

AC Delco Secondary Air Inj... Login to read more.

Vehicle Data

1998 Chevrolet Blazer LT 4.3L

Engine	4.3 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

1998 Chevrolet Blazer LT 4.3L

Engine	4.3 L
Trans	4-speed Automatic (Electronic)