ABS Valve Block/Pack/Assy/Ensemble/Thing/Hankypanky - Saab 900 Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News - 4/9 Saab Owners' Convention Day Pass Raffle | 3/26 M Car Covers (by State of Nine)

[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]

C900 Bulletin Board
1979-1993 & 94 Conv [Subscribe to Daily Digest]
(Search Author's Posts: e.g. Keyword:username)*Members Only


[Main C900 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
ABS Valve Block/Pack/Assy/Ensemble/Thing/Hankypanky
Like This Post: - Subscribe to Daily Digest for this Bulletin Board
Posted by Siegfried (more from Siegfried) on Thu, 3 Jul 2014 11:13:27 Share Post by Email
In Reply to: A rose by any other name smells as sweet....., DET17 [Profile/Gallery] , Thu, 3 Jul 2014 09:55:02
Alert me when someone posts in this thread:
Members do not see ads below this line. - Help Keep This Site Online - Signup

Det,
when I mentioned brake indicator light I meant to say whether it's alive or not. You should see it on if you leave your car sitted (or sit, if you're after that Billy) for a couple of days: the pressure in the brake accumulator will drop off then forcing the light to go on upon ignition. So if your brake indicator light is operative and it doesn't go on with the ABS indicator light then it's got to be in the anti-lock system itself.

On the other hand, that valve block (pack, thing, whatever) is designed to be a part of the anti-lock system, but the return valves also act as CLOSED exhaust valves (in other words: like those lines where those valves are inserted into do not even exist) upon conventional brakes operation. And one of your valves in your old valve-block was open thus giving you no brakes on that wheel which turned into that course-stability issue upon braking.

So once again, I recommend you to try pulling out DTCs (diagnostic trouble codes) off the ABS ECU and it's best described on the Townsend's website (google for 'townsend saab master'). Keep in mind that if you turn off the ignition then you'll clear all and any DTCs which were stored in the ABS ECU. If you find nothing there, then you'll have to check all the valves (electrically: windings, coils) in the valve block you recently replaced and the wiring between that thing and the ABS ECU. NOTE THAT WIRE HAS TO BE THICK ENOUGH TO PASS THE CURRENT REQUIRED: half-broken stock wire - which I think is your issue - isn't able to properly drive an ABS valve.

You can also perform that brake accumulator pressure capacity test: with ignition on wait for the brake pump to stop pumping and then quickly do a series of hard brakes (you don't have to be coasting, stay stationary and have parking brake applied, since safety first) until you've got the brake indicator light on in the instrument cluster (or the clocks if you're traded liberty land for metropolis). But I think that's more on the curiosity side rather than on performing real troubleshooting your issue.

Zig

P.S.
I feel like I missed some articles - both definite and indefinite ones - so please pass my sincere excuses to William and other gentlemen around.

posted by 5.18.17...


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!