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I have been getting p0171 and p0174 last fdew days. from what i have gathered through searches it means both banks are lean. One of the causes i have found out is the O2 sensors. My question is which one. also would it make a difference (performance wise) going with the replacement or O2 sims. ANy thing else beside O2 sensors cause those codes. how much does a fuel conpression test cost (on average)?. thanx.
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Ummad!<br />2k pewter maro M5. 160 thermo, WhisperLid w/K&N Filter, Jet PCM Stage 2, Free Ram Air, Air Silencer Delete (purchased already and) waiting to install manual fan switch, air/fuel ratio guage. -
if both banks are lean it could be an intake gasket leak, plugged fuel filter, a whole shopping list of things. I personally find it hard to believe that both o2 sensors went bad at the same exact time.1995 Camaro 3.4L Black with T tops, 5 speed manual<br /><br />Mods:<br />Pro 5.0 short throw shifter, MSD Ignition coils, 3.73 gears, Torsen LSD,Mac diff cover, Umi LCAs<br />K&N Cold Air Intake, Window Tint (20% rear, 35%front), aluminum driveshaft, fastchip tuning
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