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Overboosting?
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Posted by PMB [Email] (#420) [Profile/Gallery] (more from PMB) on Sat, 24 Aug 2013 13:04:39 Share Post by Email
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'99 9-3 SE Nordic Stg 3 145k.
Having an issue with power/accelerating cutting out under load (full throttle). Mostly in lower gears and sometimes when getting on the gas on a 5th to 4th down shift. Boost gauge quickly swings to the far end of the red and power/accel abruptly cuts out. At times it swings to the far end of the red but then quickly settles back to about half red. No break in power. It does not happen with anything less than full or close to throttle. What does at times, is a slight hesitation that comes and goes while accelerating at say 3/4 throttle. I cleaned the BPV and just checked silicone hosing. One from the BPV to the front of the TB, one from what I believe is the BOV to the upper connection on the side of the TB and one from lower connection on the side of the TB to something with an electrical connection attached to the strut brace. Did I miss one? I am at 145k miles with what I believe is the original fuel pump. Have the car since 65k. Don't know if that could be the issue. DIC is less than a year old. Saab part. Changing the plugs tomorrow. Read on another post further down someone suggesting it could possibly be the ECU. Any help is greatly appreciated Under normal driving, everything is fine.

->Posting last edited on Sat, 24 Aug 2013 13:07:42.

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