How old are the plugs? - 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]
[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
How old are the plugs?
Posted by Noel [Email] (more from Noel) on Fri, 17 Feb 2012 12:07:22
In Reply to: Re: No CEL for this kind of fault, ahealey56 [Profile/Gallery]
, Fri, 17 Feb 2012 06:50:14
Members do not see ads below this line. - Help Keep This Site Online - Signup
The DI will fire old plugs that have wide gaps, but it's hard on the electronics. Over time it kills the DI cassette. The DI senses knock via the NGK resistor-type spark plugs and tells the ECU to back off the power. If the DI is failing it could be sending erroneous signals to the ECU.
Start with new plugs and gap them at the lower end of the range, about .9mm.
If that doesn't change anything, then the DI may be suspect. OR....
When the BPC (boost pressure control solenoid) dies it usually keeps you at base boost or wild over boost, which are not the symptoms you're seeing. But it's possible yours is on it's way to failing at base boost and is just not quite there. (I've had them die in numerous ways.) Some people have had success cleaning the BPC with a household cleaner like Fantastic, then drying it out. I've had some luck with CRC Electronic Part Cleaner, but for me it has only prolonged the inevitable.
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
|
SaabClub.com
|
Jak Stoll Performance
|
M Car Covers
|
Ad Available
|
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!