Stock boost gauge not reading accurately

[KevinsVertTerminator]

Guys,

Have my new to me '03 and I have my 2nd problem (1st was the transportation company scratched the bumper).

Friday I went WOT or at least punched it and heard a pop. Scared me and I thought the worst!!! Car seems fine except for the boost gauge. Now under throttle it jumps 1/2 way or 3/4 up the gauge then drops to 0. My guess is that I split a vacuum line?

Car is stock except for cat back and has 22,000 miles, has been driven less than 2,000 miles in the last 2 years. I have driven it 20o in the last 2 weeks. It was in Illinois and now its in 108 degree weather here in AZ. I could not hear the whine before and still can't (Basanni cat back and no CIA).

Is my diagnosis correct?

thanks,
Kevin

 

[MG0h3]

Possibly. Open the glove box and drop it down so you can access the hose. There is a connection there that may have popped.


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[KevinsVertTerminator]

Possibly. Open the glove box and drop it down so you can access the hose. There is a connection there that may have popped.


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It sounded like it came from under the hood. But I will definitely start there when I pick it up today or tomorrow. It's currently at the body shop having that 1st issue addressed.

Kevin

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[01yellercobra]

Could be the hose or even the bypass valve popped. Although I would think if it were the bypass it would never hit boost at all.

 

[KevinsVertTerminator]

I was thinking the same that's why I said split vs popped off. I'm still nervous something big is wrong, but it appears to be all good.

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[BlckBox04]

check the oil and fluids for piece of mind. Definitely sounds like a vacuum related issue. Anything major and the car wouldn't run at all or there would be a noticeable problem.
what are the mods?

 

[hotcobra03]

sounds like a elbow on pcv hose blew...