stock boost vac guage

[Neelsonwheels]

Antone know what would cause the factory boost/vac guage to bounce sparatically?
It seem to do this when I am just cruising with getting into a boost condition.
My aftermarket guage remains stable.
Anyone?
Thanks

 

[carVSsuv]

Re: stock boost vac guage

mine does the same things and if i was to make an educated guess from seeing the back of the cluster when I took it out... it would be that its picking up a stray electrical signal causing it to jump.

 

[MIGHTYMOUSE]

Re: stock boost vac guage

the stock gauge is wired to the new 3 bar sensor vs. the original.. if it was ever reliable information originally i doubt, but now it is for looks only