Re: Stumbling/Stall on cold start - Saab 9-5 Bulletin Board - Saabnet.com
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I too have a 2004 2.3t (linear) I have been having same symptoms now for about 3 months... after about 3 months of progressively hard starts (so all in all probably 6 months). This is just an issue for the first start of the day (sitting 8-12 hours)
-usually starts, then immediately stalls gently. Second start is perfect and rest of day fine. Drives fine, no codes.
It has gotten worse last week of cold temps- now it may stall twice and less gently, then starts just fine on third attempt.
- I tried the prime-the-pump-five-times to check if its the check valve in the fuel pump that may be letting gas bleed from engine.... This doesnt do anything for me.
-I then measured pressure at the rail and pressure all seems normal and holding fine (around 40 psi)
-I then cleaned the MAF
-I then swapped in new injectors, DIC and plugs as a hail mary sort of fix, and why not the DIC and plugs were in range for replacement, (the injectors were a sort of tinkering what-the-hell scratch to itch)...
Fuel trim readings short and long term all seem normal....
maybe its one of these things that a new battery will fix... though I now feel more like its got to be the fuel check valve, which i am just avoiding doing.
I have been moving very slow to deal with this for a variety of reasons.
Next things to look into more closely?: Check valve, MAF, air intake temp sensor (MAP)???? Maybe might just let my mechanic have it for a week....
I think my wife is buying a 2010 9-3 sportcombi which may make that easier to do...
so it goes...
hope there is some clarity regards this for you soon. and me too! :)
->Posting last edited on Sat, 19 Sep 2020 17:14:33.
Posts in this Thread:
- Stumbling/Stall on cold start, Mike Johnson, Fri, 18 Sep 2020 06:14:40
- Re: Stumbling/Stall on cold start, westernny, Tue, 22 Sep 2020 08:49:00
- Re: Stumbling/Stall on cold start, andtheHawks , Sat, 19 Sep 2020 17:03:07 <-- Viewing This Message
- Re: Stumbling/Stall on cold start, bobc , Fri, 18 Sep 2020 07:53:00
- Re: Stumbling/Stall on cold start, FormerlyDudethe9-5isfast, Fri, 18 Sep 2020 07:05:54
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