Boost gauge in-op

[Trader]

Only 100 miles on my car and i opened it up for the first time, wanted to see what boot is was pushing. Boost gauge stayed at zero. ????

 

[cobrablue]

sounds like the vacuum line came off under the hood. look on the passenger side past the throttle body close to the firewall. you will see a bunch of vacuum lines one of them being red. be sure they are all connected. good luck

 

[MidLifeC]

Or, that the boost gauge only works with full throttle? At least mine does, which I assume is normal?

 

[cobrablue]

i am assuming that opened up means full throttle. correct me if im wrong please.

 

[Grumpy]

I don't believe you should have to be under full throttle to achieve some boost. My car will begin to show 2 to 4 pounds of boost with fairly small throttle openings (1/3 to 1/2) if the additional throttle is input briskly.

 

[kj385]

The stock boost gage sucks in the 03 just like in my old 00' Lightning. Go with an aftermarket boost gage and you will see what I mean.