1996 Chevrolet Cheyenne Changed Out Intake Manifold Gaskets Upper Lower After

1996 CHEVROLET CHEYENNE
247,000 MILES
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I changed out intake manifold gaskets upper and lower
After putting it all back together it idled fine and accellerates fine but under steady load maintaining a steady speed it surges pretty bad. The trouble code I'm getting is 1345 engine po174 and po175. Stft b2s2 & b1s2 lean 99.2%
Jan 7, 2013 at 5:39 AM
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ASEMASTER6371
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you have a vacuum leak somewhere. go over your work and check all lines

Roy
Jan 7, 2013 at 11:50 AM
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