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  1. P1110 - Boost Control Valve Hoses Question

    9-5 Workshop
    P1110 - BPC Valve Hoses Question Hello everyone (apologies for the misleading thread title, this is actually about the BPC Valve...) I've been trying to get to the bottom of a P1110 code in my 2001 9-5 (already replaced BCV on the firewall, the BPC up front and most of the small hoses in the...
  2. 9-3 Electrical Issue?

    NG900 & OG9-3 Workshop
    Hey everyone! I seem to have developed a pretty significant issue with my 2001 9-3. It started when I couldn't reach full boost, which was just an inconvenience. Through regular maintenance, I replaced the spark plugs. I noticed the old ones looked much too white. That coupled with my boosting...
  3. Running with BPC unplugged?

    NG900 & OG9-3 Workshop
    After checking the fusebox under the hood, I found that APC fuse #13 on my '98 900 SE Turbo was blown. Upon replacement, the 7.5 amp fuse blew again. Checked the resistance in the T5 BPC's coils. One was 3 ohms, the other was less than 1 ohm. I took out the ECU and tested the mosfets, and per...
  4. Viggen BPC

    NG900 & OG9-3 Workshop
    Quick question, I have tested my BPC by doing 2 tests. On test 1 i disconnected the BPC electronically and took it for a drive. I was getting 1 pound. Then i plugged it back in and took the 2 bottom hoses and spliced them together. I took it for a drive and i was getting 6-7 pounds. Is that...
  5. MAP/Fuel Pressure Regulator/Microswitch Update

    NG900 & OG9-3 Workshop
    Another interesting turn of events for my goose. Good News: After some fiddling and a bit of WD-40, the microswitch for my top decided it wanted to play nice again, and started to work in the middle of a 30 mile commute this week. No more irritating SID chimes, for now. Removed the rear...
  6. Base boost after CPS replacement

    NG900 & OG9-3 Workshop
    Hello folks, A little history on the problem my car is having. 2000 93 SE. 120K miles. Car would not start a couple weeks ago - troubleshot to faulty CPS and replaced sensor. Car started, but immediately seemed to have low (base) boost. Boost prior to was all the way to red. Have tried the...
  7. Overboost Problem Solved!

    NG900 & OG9-3 Workshop
    Good news, after a few misdiagnoses, I have finally fixed the overboost issue on my T5 9-3. My searches and posts originally had me thinking it was the BPC. I attempted to clean BPC using WD-40, and giving it a few good taps to free up the valve; however, that didn't work. Next, I purchased an...
  8. Wanted: Good T7 BPC + wiring harness

    Parts for Sale/Wanted - North America
    I'm converting my moody T5 BPC to the more reliable T7, and so I need that T7 BPC and wiring harness for it which contains two wires. I don't need the whole length of harness, but at least a couple feet to be safe. Not looking to pay more than 35-40 dollars shipped as a brand new BPC is about...
  9. Wanted: WI: known-good T5 BPC

    Parts for Sale/Wanted - North America
    I need to find out for certain, once and for all, if the BPC is the problem in my car. I'm wondering if someone around Janesville, Milwaukee, or somewhere in between, has a Saab with the T5 BPC (Preferably running more than stock boost levels, perhaps 20 psi) who is willing to meet up and...
  10. Over boost

    NG900 & OG9-3 Workshop
    Car is a JZW 3+, with Viggen TD04 and big FMIC: I've still got my strange lurch during WOT. New NGK BCPR7es-11 plugs, gapped correctly and a newer DI. It will spike at nearly 30 and drop to about 22 and lurches, like a fuel cut, in that area. I was told the BPC is likely the culprit. I heard...
  11. Dual stage boost control HELPPPPPPPPP

    NG900 & OG9-3 Performance, Mods & Tuning
    http://www.ericsaabsite.com/Upgrades/Stage3/BoostControl.html ALRIGHT so as stated in Erics description " An example is a wide open throttle accelerations, ECU control has max boost at 17 psi. The button is pushed to close the solenoid and the MBC takes over." After reading and...
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