negative gauge pressure
#1
negative gauge pressure
i have a 93 pontiac bonneville 3.8 liter series 2 supercharged and the boost gauge sits at negative at all times and when i throttle it hard , the gauge barely moves but remains in the negative.i know its supposed to be at zero(vertical).so what could be the problem ? i have no vacuum leaks.
#2
Re: negative gauge pressure
Originally Posted by johndibler
i have a 93 pontiac bonneville 3.8 liter series 2 supercharged and the boost gauge sits at negative at all times and when i throttle it hard , the gauge barely moves but remains in the negative.i know its supposed to be at zero(vertical).so what could be the problem ? i have no vacuum leaks.
#3
Senior Member
Certified Car Nut
Do a simple test. Pull the vacuum hose/elbow off the bottom of the BCA (round black cylinder). If your boost doesn't return like it should, I wouls strongly suspect the BCA if you really don't have any vacuum leaks.
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dbtk2
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02-09-2005 03:40 PM