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Old 01-06-2005, 09:35 PM   #1
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Default Boost Gauge Not on Zero...What Does That Mean!!!

My 92 Bonnie ssei'* boost meter is not on Zero when i am driving and i read somewhere that it is supposed to be on zero.....car is in great condition, what could be the problem?
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Old 01-06-2005, 10:37 PM   #2
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boost gauge should be at -10 on idle
in park, you should only be able to rev it to 0

while in gear, crusing along, it will go anywhere from -10 to 5

when you floor it (WOT) it should go to about 8-9 psi
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Old 01-06-2005, 11:09 PM   #3
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is it normal for the meter to jump back and forth while just sitting....
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Old 01-06-2005, 11:33 PM   #4
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not unless you have a jumpy foot that just happens to be sitting on the gas pedal.

gearhead please

maybe the boost control sylanoid
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Old 01-06-2005, 11:37 PM   #5
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what if it jumps while driving at a constant speed
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Old 01-06-2005, 11:40 PM   #6
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Quote:
Originally Posted by TORQUE
what if it jumps while driving at a constant speed
can you feel the car pulling harder at times??? it is prolly just a bad sensor
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Old 01-07-2005, 01:09 AM   #7
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it could be the BCS or the MAP sensors
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Old 01-07-2005, 01:12 AM   #8
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Quote:
Originally Posted by 1993 SLE
it could be the BCS or the MAP sensors
BCS doesn't have anything to do with that I don't believe. He'* got the same problem I do....Either your MAP sensor is junk, or you have a vaccum line going to or from the sensor that'* leaking......my oil pressure gauge does the same thing, but my problem is the sending unit, from what I hear it'* a common Pontiac problem......Could be wrong.
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Old 01-07-2005, 11:30 AM   #9
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Quote:
Originally Posted by TORQUE
what if it jumps while driving at a constant speed
If your on a hill going up than your boost will go up if your going down your boost will go down evan if you stay at the same speed.
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Old 01-07-2005, 02:33 PM   #10
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Is it little bity twitches, or a few pounds at a time?
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