Engine starts, idles loping(hunting erratic), then dies. Especially at stop signs. Idles fine when cold till it warms up, runs fine at freeway speeds. Check engine lite comes on and throws P0172 & P0174 codes. Lean fuel banks 1 & 2. I fixed it myself with form a gasket sealer. smeared it all around where the fuel metering body and the intake manifold meet, let it set up and reset the codes and no trouble since. Found vacuum leak spraying water around engine and the leak was between the fuel metering body & intake manifold.