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 NG900 & OG93 Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Because the fuel computer uses another matrix to >>>>>>
Posted by Anders (more from Anders) on Wed, 29 May 2002 15:05:00
In Reply to: Then how come the car starts good after.., Joe_MTL, Wed, 29 May 2002 14:36:56
Members do not see ads below this line. - Help Keep This Site Online - Signup
compute fuel delivery when it feels that the engine is cold, eg coolant sensor tells the engine what temperature the coolant have. The ECU than opens the injectors for a longer time allowing more fuel to be delivered.
You see, the fuelpump pressurize the system in a splitsecond. But when engine is warm, eg after 1-2 hours. The splitsecond is not enough. The engine wants its fuel right away. And because of the heat from engine, the fuel vapors that was left in combustion chamber have all gone away.
When engine is cold, the fuel pump still pressurize the system in a split second but also the injectors stays open longer and the engine have no heat built up that would reduce the fuel that comes in.
But the other problem with FPR is when the diapragm is ruptured to vacuum hose. That means that raw fuel is lead into intake manifold and the engine is flooded. The symptoms are similar but in the last case you also have a stumbling and maybe running on 3 cyl before it clears up.
posted by 66.134.55...
Posts in this Thread:
- Update on the hard start dilema., Joe_MTL, Wed, 29 May 2002 09:39:23
- This sounds like my v6 when I forgot ->, michael p, Wed, 29 May 2002 17:45:29
- Re: Update on the hard start dilema., TG, Wed, 29 May 2002 17:10:12
- I get it that the FPR is 70 USD$, so what..., Joe_MTL, Thu, 30 May 2002 09:43:32
- I have called 15 parts shops in Montreal and ..., Joe_MTL, Thu, 30 May 2002 09:37:37
- Re: Update on the hard start dilema., Makis, Wed, 29 May 2002 17:40:08
- Last Update ., Joe_MTL, Wed, 29 May 2002 13:20:13
- Re: Update on the hard start dilema., Dean, Wed, 29 May 2002 10:50:14
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!