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 Post subject: No boost
PostPosted: Sat Apr 16, 2011 7:55 am 
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Joined: Tue Apr 12, 2011 10:25 am
Posts: 5
Year and Trim: 1992 ssei
hey everyone...apreciate every thing you guys do
Let me start by saying i know nothing about bonnevilles or superchargers
some of you may have seen my car in pics and vids....I am a guy that would rather fish
than be fed...but, could use some help on this one.

i have a 92 ssei (the one with the ugly wheels lol)

*****at idle actuator is fully extended to full boost...lubed shaft with 3 and 1..
when opening the throttle hard the bca tries to retract to bypass

replaced cracked hardline to bca...turbo worked great for 1 night
next morning...no boost
pulled a 56 code off the history
test ohm resistence to the bcs..says OL(out of limit i assume)
when i unplug the bcs vacuum line coming from the supercharger or manifold (wichever)
the bca quickly retracts to bypass...

also ...i cannot find any vacuum leaks

I'm thinking bcs...what do guys thinkl


Last edited by dave1003 on Sat Apr 16, 2011 7:57 am, edited 2 times in total.

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 Post subject: Re: No boost
PostPosted: Sat Apr 16, 2011 8:04 am 
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Resident Gearhead
Resident Gearhead

Joined: Mon May 19, 2008 10:19 pm
Posts: 5530
Location: Hillsboro, Oregon
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Here is a good link to use:

http://www.3800supercharger.net/diagnosing.html

Quote:
The next thing to check is the BCS (boost control solenoid). It'll be easier to check if you remove it from the BCA. Disconnect the electrical connector and remove the bolt(s). Once it's in your hand, use an Ohm Meter to check the resistance across the two pins. I've seen BCS readings vary from 500K ohms to 1.5M ohms. Anything in that range is good. If you get infinite resistance or a dead short (0 ohms), you'll need a new solenoid. These don't fail often, so getting one from a wrecker is a good option.


Thanks to Willwren of course.

Hey Bill, I borrowed a link from your siggy. :booty2:


Last edited by myfirstbonnie on Sat Apr 16, 2011 8:05 am, edited 1 time in total.

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 Post subject: Re: No boost
PostPosted: Sat Apr 16, 2011 8:12 am 
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LE Member

Joined: Tue Apr 12, 2011 10:25 am
Posts: 5
Year and Trim: 1992 ssei
i have done all of that ...excellent site bay the way(3800supercharger.net)

i cannot get a reading except OL

Does that mean infinite resistance


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 Post subject: Re: No boost
PostPosted: Sat Apr 16, 2011 8:49 am 
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Resident Gearhead
Resident Gearhead

Joined: Mon May 19, 2008 10:19 pm
Posts: 5530
Location: Hillsboro, Oregon
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Yes, or otherwise known as an open circuit.


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 Post subject: Re: No boost
PostPosted: Sat Apr 16, 2011 11:05 am 
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Joined: Sun May 18, 2008 11:07 pm
Posts: 65489
Location: Oregon WCBF'04, '05, '06, '07, '08, '09, '10, '11 Survivor
Year and Trim: .
93 SSEi
95 SLE (SC)
97 Buick LeSabre
You won't get boost in park or neutral. So opening the throttle isn't a valid troubleshooting step.

If your actuator gets full travel when you 'trick it' as described in my website, and the solenoid reads OL, replace the solenoid.

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Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers


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 Post subject: Re: No boost
PostPosted: Mon Apr 18, 2011 8:15 pm 
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LE Member

Joined: Tue Apr 12, 2011 10:25 am
Posts: 5
Year and Trim: 1992 ssei
new solenoid fixed the boost problem....what a cool car
thanks for all the help


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 Post subject: Re: No boost
PostPosted: Mon Apr 18, 2011 11:55 pm 
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Joined: Sun May 18, 2008 11:07 pm
Posts: 65489
Location: Oregon WCBF'04, '05, '06, '07, '08, '09, '10, '11 Survivor
Year and Trim: .
93 SSEi
95 SLE (SC)
97 Buick LeSabre
Any time, any place. We live to boost.

_________________
Image
Click here for mod list for both cars
93 SSEi, 95 SLE (supercharged) 97 Buick LeSabre Limited
PontiacDad at WCBF '04: Cruise control? That's like surrendering!
Comprehensive guide to troubleshooting, rebuilding, and modifying Eaton Superchargers


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 Post subject: Re: No boost
PostPosted: Tue Apr 19, 2011 1:17 pm 
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Resident Gearhead
Resident Gearhead

Joined: Mon May 19, 2008 10:19 pm
Posts: 5530
Location: Hillsboro, Oregon
Year and Trim: .
2015 Buick Enclave
2013 Buick Regal GS
Boost is fun, I remember when the Chicken ate a pulley and lost the belt. It sucks not being blown.


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