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940SE/B230FT Starts idles nicely for 10s then dies 900

posted by  Beka964 on  Tue Dec 7 09:13 CST 2010
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last visit: Sun Jun 16 13:19 CST 2013
[RELATED]

-91 B230FT Aut. Starts perfectly, idling nicely for 10sec then dies, starts directly ...10s dies...
-Reved to 2000 rpm it recovers "roughly" just before reaches 0 rpm.
-Without AMM it runs roughly if kept manually at idling speed, a fast push on gas and it dies. Still sounds like error in background.
-No error codes after/before selfinflicted AMM 1-2-1 code 1-2-1 reseted. Feels / sounds like sudden fat mixture (as also always followed by easy start).
-Tested diags: fuelinjectors, idle valve, throttle sensor 0-pos etc. OK
-Symptoms of wrong fuel press.? measured with engine shut ? correct press? measured where?
-Symptoms of sticking turbo?
-No diffence at different temps noticed.
-At normal start one can normally after approx 10s hear a change in engine sound , AC kicks in, fan stops/starts? etc. The problemet seems to occur at that point.
whats happening then? cold start injector? idle valve ( btw what does it do?), etc?

Thanks for any suggestions or similar cases / repairs.






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