The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
7/1: Members: Log In to See Fewer Ads! |
5/28: SAAB Evolutions/TSN T-Shirts $14
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main NG900 & OG93 Bulletin Board | BBFAQ |
Prev by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
SOLVED! -- another LOW BOOST problem gone >>>
Posted by STICKMAN (more from STICKMAN) on Thu, 3 Jul 2008 09:01:56
Members do not see ads below this line. - Help Keep This Site Online - Signup
Just FYI--
Been chasing low boost issue on Viggen. Problem solved! (Thanks to helpful posts on this bb...)
Problem was boost max'd out a dead center of yellow. Noticeably less enthusiastic performance. Otherwise car ran fine.
Turned out to be one or both of the following:
1) small diameter hose had fallen off nipple on TB (throttle body).
2) bad BCV (boost control valve).
Discovered the loose hose by removing the plastic lid around the oil fill. That lid looks nice but hides a zillion potential problems from view. The hose runs from front of throttle body over to a gizmo mounted to upper firewall in front of driver (except in UK or Oz!). I believe it's a solenoid for controlling the bypass valve.
The BCV may or may not have been OK. I damaged it during troubleshooting so bought a new one. And hey... the thing's only $50 and is a common source of boost issues.
Anyway, we're boosting again! Still not as high as I'd like, but as high as this car has ever been. This car has always topped out about 3/4 through the yellow, never quite hits the yellow/red break. But some are like that I guess.
posted by 192.136....
Posts in this Thread:
- SOLVED! -- another LOW BOOST problem gone >>>, STICKMAN, Thu, 3 Jul 2008 09:01:56 <-- Viewing This Message
- Same here, different solution, NoSobStory, Sat, 5 Jul 2008 10:55:03
- Re: SOLVED! -- another LOW BOOST problem gone >>>, JohnInAtl, Thu, 3 Jul 2008 13:41:46
- Re: SOLVED! -- another LOW BOOST problem gone >>>, R.T., Thu, 3 Jul 2008 12:40:08
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.
StateOfNine.com
![](/tsn/xyz/stateofninebutton.gif) |
SaabClub.com
![](/tsn/xyz/scnabutton.gif) |
Jak Stoll Performance
![](/tsn/xyz/jakstollbutton.gif) |
M Car Covers
![](/tsn/xyz/mcarcoversbutton.gif) |
Ad Available
![](/tsn/xyz/buttonavailable.gif) |
![](/tsn/images/tsnmap.gif)
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!