Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

No boost / SC not working

Thread Tools
 
Search this Thread
 
Old 09-26-2010, 10:09 AM
  #1  
Junior Member
Posts like a V-Tak
Thread Starter
 
corrie06's Avatar
 
Join Date: Sep 2009
Location: Central IL
Posts: 28
Likes: 0
Received 0 Likes on 0 Posts
corrie06 is on a distinguished road
Exclamation No boost / SC not working

Hi, all. It seems like the supercharger in my 2000 SSEI has stopped working. The car starts and runs fine but it doesn't have the power it used to. When I give it full throttle, the boost guage only shows about -1 PSI. It never gets above zero. I've verified the T-connector on the vacuum lines under the snout are connected. I've also checked that the lever on the boost control actuator moves freely with no binding. I moved it by hand and it moves on its own with the engine running as I open the throttle. I haven't had any other noticeable problems and the SES light has not come on. I'm not sure what the problem could be or what to look at next. Any ideas?
Old 09-26-2010, 10:20 AM
  #2  
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes on 24 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Could be a bad gauge.
Old 09-26-2010, 10:43 AM
  #3  
Junior Member
Posts like a V-Tak
Thread Starter
 
corrie06's Avatar
 
Join Date: Sep 2009
Location: Central IL
Posts: 28
Likes: 0
Received 0 Likes on 0 Posts
corrie06 is on a distinguished road
Default

Just a bad guage when there'* a noticeable lack of power?
Old 09-26-2010, 10:46 AM
  #4  
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes on 24 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Hmm, pull the belt and check for play. Could be a bad coupler. Can you hear the rotors spinning?
Old 09-26-2010, 12:02 PM
  #5  
Senior Member

True Car Nut
 
sseidriver97's Avatar
 
Join Date: Mar 2010
Location: Portage mi
Posts: 7,124
Received 5 Likes on 5 Posts
sseidriver97 is on a distinguished road
Default

i figured their belt snapped or like said play in the snout but you would know if your belt broke
Old 09-26-2010, 12:41 PM
  #6  
Junior Member
Posts like a V-Tak
Thread Starter
 
corrie06's Avatar
 
Join Date: Sep 2009
Location: Central IL
Posts: 28
Likes: 0
Received 0 Likes on 0 Posts
corrie06 is on a distinguished road
Default

The belt'* not broken. I'll check for play and report back. I bought a new coupler a while back but never put it on because I couldn't get the coupler off while still on the engine. Maybe this'l be my excuse to remove the SC.
Old 09-26-2010, 12:41 PM
  #7  
-- SITE DONATOR --
True Car Nut
 
ymmot04's Avatar
 
Join Date: May 2009
Posts: 4,638
Received 6 Likes on 5 Posts
ymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of light
Default

Check and make sure the boost controller isn't sticking. There should be a black circular object attached to the SC, if you rev the engine from under the hood do you see the arm coming out the bottom move? Also, with the engine off, does it rest in the fully down position and can you easily move it by hand?

When you start getting to the point you would be creating boost, do you notice and strange noises, chugging, anything else strange?
Old 09-26-2010, 08:20 PM
  #8  
Member
Posts like a V-Tak
 
boostn96's Avatar
 
Join Date: May 2010
Location: rockford,il
Posts: 50
Likes: 0
Received 0 Likes on 0 Posts
boostn96 is on a distinguished road
Default

or unplug the boost control sensor.i was only getting 2 psi until i unplugged the bcs and bam!!!! 7psi.
Old 09-26-2010, 10:17 PM
  #9  
Junior Member
Posts like a V-Tak
Thread Starter
 
corrie06's Avatar
 
Join Date: Sep 2009
Location: Central IL
Posts: 28
Likes: 0
Received 0 Likes on 0 Posts
corrie06 is on a distinguished road
Default

Originally Posted by boostn96
or unplug the boost control sensor.i was only getting 2 psi until i unplugged the bcs and bam!!!! 7psi.
Where'* the sensor located?

I was busy this evening so I couldn't get any work done. I plan on taking a look tomorrow after work and I'll let you guys know what I find.
Old 09-26-2010, 10:21 PM
  #10  
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Likes: 0
Received 28 Likes on 24 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Should be right on the front of the supercharger. There will be a vacuum line and a plug.


Quick Reply: No boost / SC not working



All times are GMT -4. The time now is 11:10 PM.