Atmospheric Boost - Saab 9000 Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
[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 9000 Bulletin Board | BBFAQ |
Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Atmospheric Boost
Posted by JimO (more from JimO) on Sat, 25 Jul 2009 06:55:48
Members do not see ads below this line. - Help Keep This Site Online - Signup
Hit a bump taking a curve the other day, wham car will only boost to atmospheric pressure. I have run through the following T/S sequence:
1) Checked wastegate linkage, good. Moved rod back and forth - seems correct with spring tension.
2) Checked the bypass valve control valve on the LF fender. It read open (bad valve). Changed valve with good unit. Still ATM boost.
3) Changed bypass valve. Still ATM boost. Disconnected bypass valve vacuum line. Same result. I believe you need vacuum to open the valve.
4) Checked intercooler by disconnecting hoses just aft of turbo and at inlet to large Throttle Body hose, plugging one side and pressurizing the other with 30 psi from my air compressor. Intercooler and hoses are holding pressure.
I'm thinking the wastegate is stuck open somehow or bad turbo. I thought turbo was working since it does boost to ATM. There is no whistle at all.
Any other T/S steps I can take to isolate the problem? Thanks.
93 CSET 273K.
posted by 24.107.68...
Posts in this Thread:
- Atmospheric Boost, JimO, Sat, 25 Jul 2009 06:55:48 <-- Viewing This Message
- Re: Atmospheric Boost, JimO, Sun, 26 Jul 2009 08:41:50
- boost leak, Mr. Bubble, Sat, 25 Jul 2009 12:16:27
- It's boost, Jim, but not as we know it >, Bill Davies, Sat, 25 Jul 2009 07:29:03
- Re: It's boost, Jim, but not as we know it >, Larry West
, Mon, 27 Jul 2009 08:35:55 - Re: It's boost, Jim, but not as we know it >, JimO, Sat, 25 Jul 2009 11:00:30
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
 |
SaabClub.com
 |
Jak Stoll Performance
 |
M Car Covers
 |
Ad Available
 |
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!