The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 3/26 M Car Covers (by State of Nine) | 12/12 Make Amazon Pay Saabnet!

The Saab Network Mailing List FAQ
Search:

Main Index
[ Prev by Date ] [ Next by Date ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Turbo Advice
Posted by Mike Kerker - http://saabnet.com/tsn/forms/e.php3? (more from Mike Kerker - http://saabnet.com/tsn/forms/e.php3?) on Mon, 15 Sep 2003 19:29:28
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00

Help! A few weeks ago I lost all boost on the turbo of my '85 900T
(190,000mi). It only goes up to the end of the white zone. No noises or
strange sounds, just no boost. I've always idled for 20 seconds before
shutting down and change oil at 3,000 mi.

The solenoid clicks when the key is turned. I took the hoses off the
solenoid and the airflow through it changes when the power is on. I
unbolted the knock sensor, wrapped it up for a test drive, no boost. I have
power and ground at the APC box. I put some air pressure on the pressure
sensor and got the ohms to change at the box, and the solenoid chatters when
I put pressure on the sensor. I can't find any vacuum leaks. When I suck
on the hooter valve hose it seems to hold vacuum. (related or not- sounds
like an exhaust leak around the converter, but I sure can't find any leaks.)

I'm stumped. Best guess at this point is the hooter valve might be stuck?
Can the turbo itself go without any expensive sounds? Can other system
problems seem to be turbo- gas or air restriction, distributor advance,
etc.? Any suggestions?

-Mike
Elizabethtown PA
'74 99 (gone)
85 900T
68 Porsche 912 (in a few hundred pieces)
==================
The Saab Network - On the Internet Since 1988!
http://www.saabnet.com/
saabno39sdcx6spamx782saabnet.com


Posts in this Thread:

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]


This is a moderated FAQ - 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. TSN has been a moderated forum since 1988. For usage guidelines, see the TSN Mission and Purpose Page. Please remember that you are not anonymous
Your address is: 44.222.146.114 - Using claudebot - Logged.

Site Members do not see red text instructions, green links, and bottom of the page banners.
Click here to see all the Site Membership Benefits!