Codes P1640, and P1406 and little boost - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-07-2006, 12:32 AM   #21
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Ok I took the car for a drive tonite and everything was great. Power back to the usual. Would a difference in outside air temperatures make the fuel pump act differently? Also the BCS is shot. I finally got the bypass trick working and I had boost. Hooked up normal and I'm only getting 2-3 psi. Now all I need is my $1600 so I can start modifying this sucker.
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