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?

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

is it normal for the meter to jump back and forth while just sitting....

not unless you have a jumpy foot that just happens to be sitting on the gas pedal.

gearhead please

maybe the boost control sylanoid

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

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.

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.

Is it little bity twitches, or a few pounds at a time?