Question about 2001 Pontiac Grand Prix
The engine is supercharged and we found a vacuum valve which is connected to a bypass solenoid that is bad. The vacuum valve has two ports and when you **** on either one the plunger won't move at all. Neither Chiltons nor Hanes motor manuals identify this valve or its intended function on the engine. We did find a picture of a bypass solenoid that looks like ours in a Chiltons manual showing a break down of the supercharger and various parts. The bypass valve attaches to the vaccum valve mounting bracket and is connected via a vacuum hose. The error code that we have is P0171 Sys 2 Lean bank 1. Any suggestions would be greatly appreciated. Thanks.
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Posted on Jan 02, 2017
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