Re: OBD2 - Negative 20+% Long Term Fuel Trim - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: OBD2 - Negative 20+% Long Term Fuel Trim
Posted by Derek Roberts [Email] (more from Derek Roberts) on Tue, 25 Aug 2009 22:12:52
In Reply to: Re: OBD2 - Negative 20+% Long Term Fuel Trim, SWEDECAR
[Profile/Gallery]
, Mon, 24 Aug 2009 21:37:04
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Anders - Thanks for the feedback. Vehicle is a 2001 9-3, base 185 HP engine, 5-speed. I've seen a lot of codes over the last few months. Before and even after replacing the MAF I was getting 0101 and then 0100 (both MAF related). Haven't seen them for a week or more. Had a 1304 recently.
Still fighting a 0455 (and I've cleaned the gas cap seal and made sure it is tight). The LTFT3 for the frozen data when the 0455 showed up was -100%. Almost sounds like an open failure to go to negative 100%.
(As noted previously, plugs have low miles on them and gap is good. IDM replaced in Nov 2008.)
Still have the LTFT now at -18%, less negative than the -21% from earlier today. Sounds like a new MAF might be the next step....
Interestingly, the resistivity readings across the 3 blades on the MAF connector are just about the same as my old MAF...if that means anything.
posted by 206.197.6...
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