[Main 9000 Bulletin Board | BBFAQ | Prev by Date | Next by Date | Post Followup ] Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos Usual culprit is the BPC-valve Like This Post: - Subscribe to Daily Digest for this Bulletin Board Posted by Karl [Email] (#161) [Profile/Gallery] (more from Karl) on Wed, 21 Mar 2001 03:29:23 In Reply to: So how far does your boost needle go??? Mine, half way, Chris, Tue, 20 Mar 2001 18:48:06 Alert me when someone posts in this thread: Members see ZERO ads on the bulletin boards and get more feature. - Help Keep This Site Online - Signup

Try this:
in 3 rd gear around 3000 rpm, gently apply the brake pedal (just enough to hear the clicking sound that turns the brake lights on, not more). Give full throttle still keeping your left foot gently on the brake pedal. If your boost gauge now shows the same level of boost that you usually experience these days, that means that your BPC-valve is only allowing so called "base boost". Another way to try the same thing is to unplug the power cable to the BPC. It's a small black plastic "thingy" with three hoses attached to it. It's located on the driver's side on top of the intercooler package. Another way is to unplug fuse #5 in the fuse box.

I would suspect this is what's wrong with your car. It's a very common fault. I've had it on my 97 Aero with the exact same symptoms...

BTW, my Aero (with reprogrammed Trionic) boosts to 15.00 hours... It almost touches the fuel needle at full tank...

/ Karl (97 9000 Aero, 260+ hp)

• So how far does your boost needle go??? Mine, half way, Chris, Tue, 20 Mar 2001 18:48:06
  • Auto info, Bill Davies, Wed, 21 Mar 2001 15:18:26
  • Usual culprit is the BPC-valve, Karl , Wed, 21 Mar 2001 03:29:23 <-- Viewing This Message
  • a couple mm past red into black, or 25-26psi, steveC in BC, Wed, 21 Mar 2001 01:09:36
    • Mine boosts to 15.00 hours... (n/m), Karl , Wed, 21 Mar 2001 03:33:21
      • come to think of it, mine dips further sometimes, but still, steveC in BC, Wed, 21 Mar 2001 03:48:58
        • I'll be calling in the middle of April on that....., steveC in BC, Wed, 21 Mar 2001 16:21:10
        • I believe they're available from stock...but my first suggestion., Karl , Wed, 21 Mar 2001 14:55:08
    • Re: Trying to get up there too!, Phil, Wed, 21 Mar 2001 03:20:16
      • Re: Trying to get up there too!, steveC in BC, Wed, 21 Mar 2001 03:39:10
  • end of red but..., sully, Tue, 20 Mar 2001 22:14:27
  • Re: So how far does your boost needle go??? Mine, half way, SimonJ, Tue, 20 Mar 2001 19:02:41

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