I changed out intake manifold gaskets upper and.

Tiny
ANONYMOUS
  • 1996 CHEVROLET CHEYENNE
  • 247,000 MILES

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%

Monday, January 7th, 2013 AT 5:39 AM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

You have a vacuum leak somewhere. Go over your work and check all lines

Roy

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Monday, January 7th, 2013 AT 11:50 AM

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