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Thread: truck wants to turn off

  1. 08-11-2006 05:19 PM #11
    Jamest's Avatar
    Jamest
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    <div class='quotetop'>QUOTE(graysilverado5.3 &#064; Aug 11 2006, 03&#58;23 PM) [snapback]60857[/snapback]</div>
    It feels like when the battery is low and there isn&#39;t enough power to keep it on. Its a new battery and alternator, i tried a different battery and it did the same. Its like on big surge once in a while and then little surges. The truck has 14,000 miles. I&#39;ll go buy the cleaner later, and try if that works. Do i have to remove the MAF sensor to clean it? I a volant intake and its a B**** to put it back on.
    [/b]
    CHECK THE IAC VALVE. MY MOTOR SURGED AT IDLE ON THE RPMS EVERY ONCE IN A WHILE. IT WOULD STALL SOMETIMES. THEY SCANNED MY TRUCK AND FOUND THE IAC WAS TOO LOW ON VOLTAGE. THAT FIXED IT. THAT WAS ABOUT THREE YEARS AGO.

    JAMEST
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    LQ4 6.0L, WCCH HEADS, LEVEL 5 FLT 4L80E TRANS. WITH TRANS BREAK, YANK 3200 STALL, TRICK TURBO, TURBONETICS T-76 TURBO, CUSTOM INTERCOOLED, 68lb INJECTORS, CUSTOM S/D TUNE FROM NELSON PERFORMANCE, COMP CAM 212/214 .557/.559 116+2, SNOW METH. KIT, . ALL INSTALLED AND DYNOED AT NELSON PERFORMANCE: 5**?HP @ 5073rpms and 5**TQ @ 4389rpms AT THE WHEELS WITH 10 PSI OF BOOST. ALL 3/4 TON TRUCK 5435LBS, NOTHING TAKEN OFF, STREET TIRES, AND USUALLY 2 BABY SEATS. WANNA RIDE?
    SOLD***
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  2. 08-11-2006 05:23 PM #12
    graysilverado5.3
    graysilverado5.3 is offline Senior Member
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    Where and what is the IAV valve? How did they fix it?
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4
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  3. 08-11-2006 07:55 PM #13
    dieseleater03
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    Sounds kind of silly but just to be sure check both ends of your battery cables my 01 hd had the ground come loose on the block and got corroded.It did the same thing when the ac compressor would kick on because it was drawing more juice.
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  4. 08-11-2006 08:24 PM #14
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    KySilverado
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    With the MAF loose chances are the PCM will now need to re-learn idle. I suspect that after awhile, the problem will clear up on its own.

    03 Chevy ECSB, Z71, 6.0L(LQ4), Maggie @ 9PSI, 4l80E, PI Vig 2800, Detroit True-Trac, 4.10, 90mm LS2 TB, Meth Injection, HSW Dry N20, LPE GT7 Cam, 918 springs, Dynatech LT's, Hi Flow cats, custom stainless exhaust, DMH cutouts, DJM Suspension Drop, E-Fans, AirAid, HPT 2Bar SD Tuned, 11.68 @ 114.2
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  5. 08-12-2006 12:50 PM #15
    graysilverado5.3
    graysilverado5.3 is offline Senior Member
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    The first thing I checked were the battery cables cause having those cables looses causes problems. I would still like to know what the IAC valve is, and if I can replace it myself?
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4
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  6. 08-12-2006 08:54 PM #16
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    <div class='quotetop'>QUOTE(graysilverado5.3 &#064; Aug 12 2006, 11&#58;50 AM) [snapback]60914[/snapback]</div>
    The first thing I checked were the battery cables cause having those cables looses causes problems. I would still like to know what the IAC valve is, and if I can replace it myself?
    [/b]
    The IAC valve is a idle air control valve in the throttle body. You may not have one in your model pickup. I know they are in the 99 -02 trucks, but I do not know if they are in the 03 and ups.

    Jmaest
    12 Sec. Club! SOLD
    La Viuda negra/ a.k.a. Black Betty

    LQ4 6.0L, WCCH HEADS, LEVEL 5 FLT 4L80E TRANS. WITH TRANS BREAK, YANK 3200 STALL, TRICK TURBO, TURBONETICS T-76 TURBO, CUSTOM INTERCOOLED, 68lb INJECTORS, CUSTOM S/D TUNE FROM NELSON PERFORMANCE, COMP CAM 212/214 .557/.559 116+2, SNOW METH. KIT, . ALL INSTALLED AND DYNOED AT NELSON PERFORMANCE: 5**?HP @ 5073rpms and 5**TQ @ 4389rpms AT THE WHEELS WITH 10 PSI OF BOOST. ALL 3/4 TON TRUCK 5435LBS, NOTHING TAKEN OFF, STREET TIRES, AND USUALLY 2 BABY SEATS. WANNA RIDE?
    SOLD***
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  7. 08-12-2006 09:20 PM #17
    RedHeartbeat
    RedHeartbeat is offline WTH JUST HAPPENED?
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    My Astro used to do that and then the fuel pump died. I replaced the fuel pump and viola&#33; no more problem.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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  8. 08-12-2006 10:22 PM #18
    graysilverado5.3
    graysilverado5.3 is offline Senior Member
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    I bought a bottle of electrical cleaner, and the problem seems like it went away. Thanks for all the help.
    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
    13' Sierra Denali 2500HD CCSB 4x4
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  9. 08-12-2006 10:57 PM #19
    RedHeartbeat
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    damn, you scared it into submission.
    See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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  10. 08-13-2006 12:18 AM #20
    graysilverado5.3
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    03' Silverado RCSB H/C 5.3, 4L80,76mm KBracing Kit
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