High Boost - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 10-22-2008, 01:35 PM   #1
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
pojawis is on a distinguished road
Default High Boost

I made a quick search on this forum and couldn't find info on this problem. Apologies in advance if this is a repeat.

Working on my 2001 SSEi. Has about 120K on it. Recently noticed higher boost than normal and reduced fuel mileage. On harder accelerations, boost gauge indicates in the red. Need help to troubleshoot this. Can anyone point me in the right direction?
pojawis is offline   Reply With Quote
Old 10-22-2008, 02:01 PM   #2
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

Most likely the weather has cooled down considerably where you are located. Colder air means denser and denser means more boost. This is normal. And unfortunately the more boost you have, the more fuel you need to burn with that air.
BillBoost37 is offline   Reply With Quote
Old 10-23-2008, 10:37 AM   #3
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
pojawis is on a distinguished road
Default

Thanks. I hadn't considered air density.

It didn't seem to have this condition previously in colder temps, however. My main concern is malfunction/damage to the supercharger and/or related components and I didn't want to ignore any early warning signs. Other than the boost indications, it seems to be running normally. I can hear more of a whine on acceleration since I replaced the stock air filter with a K&N. Other than that, it all looks good.

Any inspection or maintenance tips on this thing?

Thanks again.
pojawis is offline   Reply With Quote
Old 10-23-2008, 10:56 AM   #4
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

superchargers are like wenkel engines.. they require very little.

Maybe give it an oil change (supercharger oil from GM only) every 30K or so. When it starts making odd noises somewhere around 100-200K miles, then it'* coupler and maybe bearing replacement time.
BillBoost37 is offline   Reply With Quote
Old 10-23-2008, 03:32 PM   #5
Junior Member
Thread Starter
 
Join Date: Apr 2008
Posts: 4
Thanks: 0
Thanked 0 Times in 0 Posts
pojawis is on a distinguished road
Default

Thanks once again.
pojawis is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Low boost, no boost problem immusicman Forced Induction 12 09-27-2009 01:05 AM
Boost Control Solenoid Maintenance and Boost Control Actuator Test for low Boost* Toddster Trouble shooting + Test Procedures 0 03-21-2009 07:24 PM
More boost via boost controller... DanCulkin Performance, Brainstorming & Tuning 14 07-02-2007 12:02 PM
Low RPM, high boost chadow427 Performance, Brainstorming & Tuning 2 10-03-2006 09:47 AM
low stock Boost vs high stock boost hvactech Performance, Brainstorming & Tuning 12 05-10-2005 11:14 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:41 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.