boost gauge help...

hello, i have a question, i was looking around forums and can't find an answer, unless i missed it, but my boost gauge on my dash board isn't working, does anyone know whats wrong with it, or if there is a post on forums if there is can someone point me to it, oh and its a 2000 GTP aruond 177k miles on it....

besides that about a week ago, i floor the gas paddle to get into freeway lane, after that the car makes a werid noise and the service engine came on, the car would jerk when going from 1st to 2nd hard, but after a while the car stops doing that and the service engine light went off..ever since it stop, what could the problem be, thank you

can anyone help me? and oh today i ghetto install an high flow air filter but its not a short one, its one of them long ones, is there any diffrence?

If the Grand Prix is the same as the Bonnevilles then the boost gauge sensor (MAP sensor) gets vacuum from a line under the supercharger snout. There's actually a T under the snout, one side goes to the MAP sensors & the other side goes to the fuel pressure regulator. Check the vacuum lines & T. Let us know what you find.

If the Grand Prix is the same as the Bonnevilles then the boost gauge sensor (MAP sensor) gets vacuum from a line under the supercharger snout. There's actually a T under the snout, one side goes to the MAP sensors & the other side goes to the fuel pressure regulator. Check the vacuum lines & T. Let us know what you find.

thanks ill check tommorow since its outside, but does anyone here know more of what i ask? thanks yah

i check the T connection to the fuel regulator under the snout and its still connect but why wont my stock boost gauge get any readings?

According to All-Data, your boost gauge is electronic receiving information thru a serial data line. Possible it's related the the MIL lamp on/off and prior drivability issue you had.

I would try to retrieve some current or history codes first.