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)

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
Re: Check Engine & O2 Sensor & Fuel Type
Posted by Stephen Goldberger (more from Stephen Goldberger) on Tue, 20 Mar 2001 23:11:13
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

>The basic problem with the ETS is that, as far as electronic control
>systems go, it does a LOT of physical work, 100% of the time the engine is
>running.  Every minute throttle-pedal input is processed and translated to
>a movement of the stepper-motor in the ETS throttle-body.  Even with no
>pedal inputs at idle, the throttle motor works continuously to control the
>idle-rpm, modulating for changing auxillary engine loads and ambient
>conditions.  It also controls throttle opening when the cruise-control is
>in use.

The basic problem with the ETS is that it was nearly a decade ahead of
itself.  At the time, it was a novel and unique system developed 'in
house.' An elegant design which addresses the reliability issues with
earlier 'AIC' valves and simplifies the 'belt and suspenders' approach of
independent systems for idle, cruise, and power reduction for traction
control, the implementation has proven to be 'premature'.  Today every new
Saab uses a 'drive by wire' electronically controlled throttle, as to a
number of other cars.  During that decade, Saab has benefitted enormously
from its access to GM's parts catalog of things like electric motors,
connectors and switches, not to mention the muscle which GM's purchasing
can bring to bear on parts quality issues.  At the same time, suppliers
such as Bosch and Delphi have been able to invest in the engineering
necessary to bring 'ETS' (or 'drive-by-wire') to reliability, since the
design can be amortized over potentially millions of vehicles per year.

This may be scant consolation to those who must muddle along with the older
system, but new car buyers needn't be concerned with the reliability of
todays 'drive by wire.'  
Stephen Goldberger, Editor and Publisher
NINES, the magazine of the SAAB Club of North America
vist our web site at http://www.saabclub.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: 3.19.30.232 - Using Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) - 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!