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135sohc
07-17-2009, 02:27 AM
2.2 TBI fires off a code 51 for running lean. No other codes stored

oxygen sensor is a year old. CTS is about 6 months old. Nothing to indicate a vacuum leak or other condition to lean out the mixture so much.

jl93sundance
07-17-2009, 12:09 PM
fuel pump?