i think the car is surging but not sure - Page 2 - 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 10-22-2009, 02:26 PM   #11
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ok i just went flat to the floor and the bloost went to 17.5+ i'll show below

-70 0 70
I I I I I I I I I
^17.5
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Old 10-22-2009, 02:27 PM   #12
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well that didnt work
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Old 10-22-2009, 02:30 PM   #13
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Do you have a section at the top of travel on your boost gage marked yellow and/or red? What reading does the yellow start at? How far away from yellow are you getting at wide open throttle (WOT)?
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Old 10-22-2009, 02:31 PM   #14
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17.5? Hmm, a boost gauge should be -10 to +10. That should put you about +7.5 and that'* about right for a stock engine.
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Old 10-22-2009, 02:44 PM   #15
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ok i just went WOT and the boost gauge only went to +17.5 which is just abit to the right of the 0
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Old 10-22-2009, 02:46 PM   #16
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never mind the last post i put. so why is my blazer faster the my SSEI and the SSEI runs GREAT except for the bucking at low RPM
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Old 10-22-2009, 02:49 PM   #17
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17.5? Hmm, a boost gauge should be -10 to +10. That should put you about +7.5 and that'* about right for a stock engine.

Holy smokes. Mark this day on your calendar as the first (and probably the last) time 2KG4U knew something Danthurs didn't. I didn't question his readings because I know what they are. Canadian car, metric readings. Same as mine.
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Old 10-22-2009, 02:51 PM   #18
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Do you have a section at the top of travel on your boost gage marked yellow and/or red? What reading does the yellow start at? How far away from yellow are you getting at wide open throttle (WOT)?

Do you have the yellow and red sections? What reading does the yellow start at?
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Old 10-22-2009, 02:51 PM   #19
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Well, you got me there.
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Old 10-22-2009, 02:59 PM   #20
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17.5 pascals is 0 psi, which is normal atmospheric pressure. You aren't getting any boost off your supercharger. That'* why your car is so slow. Read these:

https://www.gmforum.com/t284309/#post1392207
https://www.gmforum.com/t280121/
https://www.gmforum.com/t284310/#post1392208

Shouldn't be too hard to fix. We can walk you through it.
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