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Violent shaking under low boost

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ISeeSlowPeople

Probationary Member
23
0
Jun 28, 2006
Philadelphia, Pennsylvania
I needed a new ac compressor on my 94 Tsi and had it changed out last week. Before I brought it into the garage my boost would max out at around 18psi. Right after after I got the car back it was maxing out at around 15psi. I just thought I had to adjust my boost controller and didn't think anything of it. Yesterday all the sudden if I hit around 5psi of boost at any speed the whole car would shake violently and not let up until I let off the gas. As long as I kept the boost below 5psi I could drive the car fine.
Thinking maybe there is a loose hose somewhere?
 
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