so my dads buick regal gs is only putting out around 3psi of boost and i know its sposta have around 7 so will told me it would either be the actuator or the solenoid for the super charger so could you tell me which 1 it would be or any other guess of what the problem is thanks btw its got 190000 miles on it if that helps thanks

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1999 Grand Am SE (AKA Brandy) 2.4L I4 Mods: Cold Air Intake, 2 Sony 12", 2000w Crunch Amp, Pioneer Head Unit, debadged, tinted tails, 180 stat

TIRE SHINEEEE!!!!!!!!!!!!!!!!!!!!!!!

There is a bypass valve on the supercharger that is likely stuck open. Somebody else here might have a pic to show this. This is likely caused by carbon buildup in the valve and may need a tear-down (remove the S/C) to properly clean it up.

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Boost addict


The Fleet:
'93 SSEi - Twincharged + manual Build thread
'97 Camaro - Top swap
'05 STS - V8, AWD, her DD
'92 Trofeo - Fair weather DD
'99 Montana - top swap 3800
'04 Sierra 2500HD - LLY Duramax

Current project:
Something cool, trust me.

Upcoming projects:
'92 Bonneville SSE
'87 LeSabre T-type
'67 LeSabre

Gone to greener pastures:
'84 Sierra Classic - Twin turbo 3800
'97 LeSabre - Top swap

RIP:
'86 LeSabre - pictures
'93 SE - L67

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Bye Bye:

RIP sandrock

Two things to check. The BCA (actuator, the black cylinder on the front near the throttle body with a vacuum line running to the top and the bottom, if you're not familiar) has a rod with a foot coming out the bottom. When the engine is not running, the foot should rest on the stop below it. With a little effort, you should be able to lift the foot by hand, thereby pushing the rod up into the BCA. There shouldn't be any binding or "catchy" spots. If you start the engine and let it idle, the foot should be pulled straight up. If none of the above are happening, some good shots of WD40 at the rod that goes into the supercharger while working it by hand may free it up.

Second, unplug the BCS (solenoid, little black box connected to the other end of the vacuum line running out of the bottom of the BCA) and take it for a drive. If the boost comes back, you need a new BCS.

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WHITE WHINE - 1992 SSE Supercharged 236.26 ci (.040 Over) 15.090 at 90.2 MPH on old engine w/ slipping trans & melted O2 sensor - Gen 3 M62 and matching TB, Gen 2 Pully, Zillamotorsports Ported LIM, YT 1.72 Roller Rockers, SII FPR & Injectors, Hypertech Thermomaster chip w/ 160 Thermo, TransGo Shift Kit, Infinity/Pioneer Speakers & a 10" Alpine Type R Sub, all the watts, 140 amp Alternator, Ricepipe CAI w/ heatshield, Pilot Angel Eye Foglights, Clear Corners, '02 17" Chrome Bent 5's, Magnaflow F-Body Muffler and Hi-flo Cat, Ceramic Coated Ported Exhaust Manifolds, Fan Override, Monroe Reflex struts, red calipers
2009 G8 GT - Sport Red Metallic, loaded, SOLO Axlebacks, Rotofab Intake, Tuned, autodim mirror, removed intake manifold cover, HSV GTS triple gauge pod, two tone red-hot shifter and HSV SuperSport steering wheel, GXP rear sway bar and diffuser, 3.45 diff and various Camaro suspension bits, LED Taillights

Okay so I looked at the actuator and it scenes to be flowing smoothly so I went after the solenoid and got it checked it read 0 ohms so I'm assuming it's broken but I put it back and ran the hoses to it but didint plug the wireing harness back in and took it for a drive but it still tops out at 3 psi so any ideas why that would happen

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1999 Grand Am SE (AKA Brandy) 2.4L I4 Mods: Cold Air Intake, 2 Sony 12", 2000w Crunch Amp, Pioneer Head Unit, debadged, tinted tails, 180 stat

TIRE SHINEEEE!!!!!!!!!!!!!!!!!!!!!!!

Could be stuck open. Plug the lines with a couple golf tee's and go for a drive again.

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Bye Bye:

RIP sandrock

Although, I somewhat suspect a vacuum leak being part of this as well. Or possibly BCV or wiring to it. At 190k I wouldn't rule anything out. Which is why I'm having you bring it over so I can see what is there for myself.

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Will
88 Cutlass Ciera Brougham International | 120k mi | White w/ Dk Claret Int. | Roller to be S2 L67/4T65E-HD | 1 of ~5100 3.8 FE3 Int'l series
91 Riviera | S2 L67 Swap/4T60E | 127K mi | Antelope Met. w/ Tan Int. | Saved From Death By Crusher
92 Bonneville SSE | L67/4T60E | 77K mi | Med Slate Grey w/ Two-Tone Grey Int. | Low Miles Time Capsule
92 Lumina Z34 | LQ1/4T60E | 177k mi | Torch Red w/Grey Int. | Rusty In Odd Spots
99 Tahoe LT | L31/4L65E | 276k mi | Spiral Grey Metallic w/Grey Int. | Truck for Truck Things and Portable Concert Hall
03 Park Avenue Ultra | 212K mi | White Diamond Met. w/ Shale Int. | Southern Time Capsule
05 Acura RL | 155K mi | Carbon Grey Pearl w/Ebony Int. | The Super-Hooptie Daily

Lol if it starts cause I'm gonna try in a little but if it doesn't I'll give you money for gas to come over here

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1999 Grand Am SE (AKA Brandy) 2.4L I4 Mods: Cold Air Intake, 2 Sony 12", 2000w Crunch Amp, Pioneer Head Unit, debadged, tinted tails, 180 stat

TIRE SHINEEEE!!!!!!!!!!!!!!!!!!!!!!!

hope yall can get her fixed before the weekend...however Tim you better be able to make it to Orland park on sunday!

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LUCAS Member # 534.
96 olds cutlass supreme SL 4 door 3100 4t60 *3.33 gears* *Fe1* 115K bone stock DD

I'm going back there tomorrow night after work. Fuel pump= Kaput.
Another Limo Rescue mission, lol.

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Will
88 Cutlass Ciera Brougham International | 120k mi | White w/ Dk Claret Int. | Roller to be S2 L67/4T65E-HD | 1 of ~5100 3.8 FE3 Int'l series
91 Riviera | S2 L67 Swap/4T60E | 127K mi | Antelope Met. w/ Tan Int. | Saved From Death By Crusher
92 Bonneville SSE | L67/4T60E | 77K mi | Med Slate Grey w/ Two-Tone Grey Int. | Low Miles Time Capsule
92 Lumina Z34 | LQ1/4T60E | 177k mi | Torch Red w/Grey Int. | Rusty In Odd Spots
99 Tahoe LT | L31/4L65E | 276k mi | Spiral Grey Metallic w/Grey Int. | Truck for Truck Things and Portable Concert Hall
03 Park Avenue Ultra | 212K mi | White Diamond Met. w/ Shale Int. | Southern Time Capsule
05 Acura RL | 155K mi | Carbon Grey Pearl w/Ebony Int. | The Super-Hooptie Daily

I'll tag the update, and endthread on this one.

New fuel pump went in, fired right up, new BCS is in, runs like a scalded dog like it should. Makes 8.8 lbs of boost. It's actually fun to drive now that it has fuel pressure and boost.

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Will
88 Cutlass Ciera Brougham International | 120k mi | White w/ Dk Claret Int. | Roller to be S2 L67/4T65E-HD | 1 of ~5100 3.8 FE3 Int'l series
91 Riviera | S2 L67 Swap/4T60E | 127K mi | Antelope Met. w/ Tan Int. | Saved From Death By Crusher
92 Bonneville SSE | L67/4T60E | 77K mi | Med Slate Grey w/ Two-Tone Grey Int. | Low Miles Time Capsule
92 Lumina Z34 | LQ1/4T60E | 177k mi | Torch Red w/Grey Int. | Rusty In Odd Spots
99 Tahoe LT | L31/4L65E | 276k mi | Spiral Grey Metallic w/Grey Int. | Truck for Truck Things and Portable Concert Hall
03 Park Avenue Ultra | 212K mi | White Diamond Met. w/ Shale Int. | Southern Time Capsule
05 Acura RL | 155K mi | Carbon Grey Pearl w/Ebony Int. | The Super-Hooptie Daily