I CHANGED OUT INTAKE MANIFOLD GASKETS UPPER AND ...
1996 Chevrolet Cheyenne
January, 7, 2013 AT 5:39 AM
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%