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 C900 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
87 'S: How much anti-knock width?
Posted by Ben Millard [Email] (more from Ben Millard) on Tue, 10 Sep 2002 17:55:29
Members do not see ads below this line. - Help Keep This Site Online - Signup
Hi all,
My 87 900s is knocking at low rev (>1500) mostly when warm. I've started working through vacuum leaks, fixed a cracked hose and replaced all the regular vac lines with silicone. My AIC needs a better cleaning, but it HAS been cleaned recently.
I cannot detect knock at any throttle above about 2000, at all temperatures. (Well, ok, summertime in Mid Western US)
Here's my wonder: on regular gas, the knock sensor SEEMS to be working above 2000, is it, or am I not hearing the knock?
Is it possible for the anti-knock system to have a reduced window? Like a limiting of its effective bandwidth or authority? On my 86 900s and 91 9000t (as well as older SAABs) I've NEVER heard knocking with any fuel under any conditions. Even the '73 99 towing the Uhaul to Texas in summer...
So what gives? Just keep working on vac-leaks? Try playing with the basic timing setting (where's that darned strobe light?!)? or just get right to a new knock-sensor and then to a new FI ECU?
Thans
Ben
posted by 167.165.1...
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.
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!