misfires and system too lean codes

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misfires and system too lean codes

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04-19-2015, 11:13 PM

greggo151

Member

Join Date: Dec 2013

Location: Bakersfield, Ca

Posts: 19

misfires and system too lean codes

On my new to me '07 X5 3.0 (62k miles) I've had the P0174 & P0171 codes codes for a little while. Today on our way home from LA after going over the grapevine, the car started idling rough. I pulled codes when I got home and now have P0302, 303, and 306 plus B2AAA.

I was going to start with looking for intake leaks for the initial codes, but now I'm wondering where to start.

One other thing that I may get razzed for. We stopped in Castaic and got gas at the truck stop. I put in 87. Could that be the start of the problem...crappy gas?

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