Re: Pinging and knocking (long-ish) - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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]

NG900 & OG93 Bulletin Board
1994-2002 [Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only

[Main NG900 & OG93 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Pinging and knocking (long-ish)
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Dean (more from Dean) on Thu, 11 Sep 2003 09:26:39 Share Post by Email
In Reply to: Pinging and knocking (long-ish), Ty, Wed, 10 Sep 2003 17:53:20
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

Use premium fuel, highest octane pump gas you can find. Fill when near empty. Note any changes.

If that does not fix the knocking, you could try 1/2 gallon of toluene in a tank of premium to see if things respond to higher octane. That will raise the octane by around one full cotane number. Use a gasoline container to put it in, you can't pour from the can it comes in and you don't want this on your paint. Xylene can be used too, or a 50:50 mix. Around $10/gal in paint stores. Smaller cans in hardware stores are a rip. Off the shelf octane boosters are a joke. When they talk about increasing octane 6 points for example, they are talking 6/10ths of an octane level. No you cannot live adding that alll the time, but you can do this once to judge the affect of higher octane on your problem.

bcpR6es11's, right? R=resistor

Otherwise it starts and runs well, good power and boost?

Check to see if there is a resistance to ground from the O2 sensor bases to the negative battery connector. You may need to brighten metal to get a good contact. You will need a good DVM for this. The sensors get their ground via the exhaust system.. which is stupid, but a common practice. If you find a resistance, find were it is and deal with that. The sensors can be backed out a little and wet/dry sandpaper folded over can brighen things in the gap and the sensor can be reseated. I am wondering if the AF mixture is a bit out because of a O2 sensor signal been off a bit.

Also check for any damage to the hose from the TB to the MAP sensor. That is a very critical hose.

posted by 208.24.179...

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!