Mid Yellow Boost issue has me seeing Red - 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]

9000 Bulletin Board
1985-1998 [Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Mid Yellow Boost issue has me seeing Red
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Low Boost Bruce (more from Low Boost Bruce) on Sat, 2 Apr 2011 15:43:54 Share Post by Email
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

Please excuse me for posting this on both the 9000 & ng900/og9-3 boards as it deals with a T-5 turbo boost issue that I would be ripping my hair out and/or it would be turning gray if I had any.

I have a 1999 9-3 auto with 178K miles. Experienced the classic bad BPC issues of mid-yellow boost. Bought a used BPC, put it in the car & got full boost right into fuel cut out. Came back to Saabnet & read some more, learned about resistance testing the BPC (which I hadn’t & the new one tested bad). At least I knew the system can handle the pressure, (i.e. no lose or broken hoses & the waste gate will stay shut). Contacted the guy, & he sent me new one, and that one had good resistance. Put it in and still mid-yellow. Came back to Saabnet & read some more, posted some & someone pointed me to checking out under hood 7.5A fuse 13 for the APC (old name for BPC), and a DIY for repairing the ECU on a T-5 9000. Yup, the fuse was blown. Replaced it. Right away I noticed a difference in the car & when I was able to get on the gas… right up to a little past mid-yellow & then back to mid-yellow. Fuse was blown & so was the BPC. Today, I finally got around to replacing the 3 FETs (3055VLs) in the ECU that control the BPC, replaced the fuse, and replaced with another used BPC that tested good & went out for a drive. Once again the car seemed different and when I was able to get on the gas once again right up past mid-yellow & then back to it & refused to go past. However, this time the fuse is not blown and the resistance across the BPC is good.

Can some one please help!

posted by 75.28.18...

Posts in this Thread:
Alert me when someone posts in this thread:
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.

Name: Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
E-Mail: (Optional)
Re-Enter E-Mail: (Confidential & Secure - Not revealed to other users!)
Note: Please check your spam folder for BB responses.

Subject:

Posting rules are simple - No for sale/wanted ads may be posted here - use the site classifieds.
You may not cross-post your message to multiple BBs.
Not permitted: political/religious topics and being disrespectful (personal attacks, insults, etc...).
 Site Members do not see any red text, inline ad links, bottom of page anchor ads, box ads, or anti-spam check.

Message: (please no for sale/wanted classifieds - post those in the Saabnet.com Classifieds)
Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).

Links are now automatically made active, no need for any special code (or use the Option Link field below) - don't put links in () or end with a '.'
To add inline images to your post above, use [img]http://www.domain.com/img.jpg[endimg] (or use the Optional Image Link field below).
Optional Link: (e.g. http://www.saabnet.com/)
Link Title: (Optional)
Optional Photo/Image Link: (e.g. http://www.saabnet.com/img.jpg)
Photo/Image to Upload: (Please be patient while file uploads)



StateOfNine.com
SaabClub.com
Jak Stoll Performance
M Car Covers
Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

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!