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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-16-2007, 12:57 PM   #1
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When i am driving my boost gauge readsa lil high, and it reads at zero when i am idle is that good or bad.
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Old 07-16-2007, 01:01 PM   #2
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It should read several PSI negative at idle. I would look for the MAP sensor, and see if it has a vacuum line hooked up to it. If not, find the line nearby and hook it up. If it does, follow the line till it ends. It should be connected to the LIM somewhere, i think. I'm not hugely familiar with the Series II.
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Old 07-16-2007, 01:23 PM   #3
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You will have the horseshoe vacuum line.

Follow it from the BCS to the fuel pressure regulator..under the snout to the lower intake where it gets vacuum then back around to the two map sensors.
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Old 07-16-2007, 11:54 PM   #4
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The vacuum T under the supercharger has been known to get quite brittle and crack, so that is a good place to start looking. The MAP sensor is attached to the rear lift bracket back by the firewall. The vacuum fitting attaches to the bottom of it. It can be tough to reach. The 2000+* only have one MAP sensor, however.
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