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Not building boost when accelerating

3298 Views 14 Replies 10 Participants Last post by snguyen2688, Mar 8, 2022

snguyen2688

Discussion Starter · Oct 28, 2021

Help! I have a 16' at idle it reads vacuum fine but when I accelerate the boost gauge goes up to 0 and that's it. I don't hear any noises from the supercharger like others posted. Any ideas?

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They nailed it.
SC clutched pulley is junk and not engaging OR bypass valve is stuck open not letting SC build boost.
Take both belts off and spin the SC pulley.

It almost looks like something got wrapped into the pulley like a bag or something and jammed the clutched pulley up.
Seems odd that this could happen, but seems odd to even see plastic in there to begin with.

2015 Hellcat Challenger A8 Sublime. Engine: 2.85 Metco, 10%OD ATI, Metco Idlers, hpindy 15% UD acc crank pulley, TBA Lwr Idler, FI SC Spacers, 180 Thermo, 1050X Injectors, FAS Ported Snout, FAS Billet Bearing Plate, CFM 105mm TB, JLT CAI, JLT Oil Seperators, TBA Boost Ref Adptr - Tuning: OST Dyno Engine 93/C16 & Trans via MPVI2 Hp Tuners - Exhaust: JBA Catless Downpipes, Trackhawk Exhaust Tips - Drivetrain: 3.09 Rear Diff, DIRS & Race Brace, 1pc DSS Aluminum DS, BMR Modded Safety Loop, Petty Trans Brace - Suspension: Eibach Pro-kit Springs, Eibach Front Upper Adj Arms, BMR Rear Lwr Arms, BMR Subframe Connectors, Speedlogix Front Strut Brace, Petty Ent Rear 4pt Shock Tower Brace, Bwoody F/R Sway Bar Links, Short rears - Wheels/Tires: 10.5 Replicas, 305 Nitto 555R Drag, Black Lug Nuts, Blackout Center Caps - Exterior: Perf Wing, ZL1 Splitter/Rear Diffusr/Side Skirts/Rear Ext, Redeye Emblems, Blackout Front/Rear Emblems, AMD Fuel Door, Fastys LED Tubes, Tint, Oracle Markers

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GreenMachine15

· #11 · Oct 28, 2021

Oh snap. Got a nice stock pulley for sale just like everyone else lol.
Likely everyone killed the dust cover taking it off.

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