Thread: Stalling around 0psi

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  1. #1 Stalling around 0psi 
    Explicit_Spade
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    Default 08-19-2011
    Last week during a cruise I was attempting to make it up a hill and my car was acting like it was going to die. This was the first time I noticed the issue. Since then it has been a PITA trying to figure out what is causing it. I've recently noticed it happens between 5inHg and 5psi. My idle inHg is around 18 and my boost depending on speed is 8-9psi. My idle inHg used to sit around 20 and my boost was around 9.

    I have checked for vacuum leaks and as far as I can tell everything is normal.

    I'm going to clean the maf in a bit. Does anybody have any other suggestions on what to check next?
    Quote Originally Posted by W-Body Store
    Remember, GM engineers didn't take into account your need for speed.
    Daily Driver: 06 Grand Prix GT / 9.4:1 CR / IS3 Heads / Ported Gen V / ZZP Headers / HPT Pro / Pulleys: 4.25, 3.8, 3.5, 3.4, 3.2, 3.0, 2.9, 2.7
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  2. #2 Re: Stalling around 0psi 
    blueguy
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    Default 08-19-2011
    DBW TB clean?

    Leak on the fuel rail...as in 1 of the injectors not seating will cause that issue...I had that problem once...the fuel rail was VERY slightly bent...bent it back, solved my issue.

    Check your vac lines on your gauges as well...something might have popped off or got burned too...it is possible.
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  3. #3 Re: Stalling around 0psi 
    Explicit_Spade
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    Default 08-19-2011
    Thanks Nick!
    I sprayed the MAF and TB and it seems to be doing better now!
    Quote Originally Posted by W-Body Store
    Remember, GM engineers didn't take into account your need for speed.
    Daily Driver: 06 Grand Prix GT / 9.4:1 CR / IS3 Heads / Ported Gen V / ZZP Headers / HPT Pro / Pulleys: 4.25, 3.8, 3.5, 3.4, 3.2, 3.0, 2.9, 2.7
    Projects: 86 Monte Carlo SS / 98 Sonoma / 74 Honda CB750
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  4. #4 Re: Stalling around 0psi 
    blueguy
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    Default 08-19-2011
    Yeah...if you've never cleaned your TB...or the MAF...it makes a pretty decent difference.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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