Help With Engine Code Po171

[Stet28]

Got a code po171 bank 1 lean on a 04 2.3 petrol (gas converted) changed idle control valve, cleaned throttle control also cleaned mass air flow sensor. My car is holding revs 1100-1200 instead of its normal 850ish when idle. When stopping the revs will shoot up to as much as 3500 but mostly 2500 any suggestions?

[Stet28]

I've also replace the battery disconnected lamba sensors still doing the same! Edited December 21, 2012 by Stet28

[seatkid]

I would say you have air leak post throttle. Check the brake vacuum pipe - commonly it splits at the ends i.e. brake servo end and inlet manifold end.

[Stet28]

All checked no problems … got no power to fuel vapour unit do u know would that be in fuse or relay?