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Thread: Reduced Engine Power help please

  1. #1
    Senior Member JUSTASBC's Avatar
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    Default Reduced Engine Power help please

    I have a Magnacharged 05 Silverado 5.3l it has a 90mm T-body with an X-Link water/meth injection, heads, cam headers, dual 3 exhaust. I am running a semi OLSD COS3 with a 2 bar MAP sensor. I had a 2.9 pulley on it for a while, and it would go into REP mode a few times a night at the strip. It never went in until I was just crossing the traps so I just cleared it and went on with my night. I would get a P0102, P1516, and sometimes a P0106 code with it. I recently changed to a 2.6 pulley, and have been going into REP with a P0102, and a P2101 if I hold it at about 60-70% throttle. If I floor it, it will rev up, and often times go into REP with a P1516 and P0102 code. I have done a resistance check on the wires to the Tbody, and they check OK. I have also checked the ground wire to the passenger side head, and that appears to be fine.

  2. #2
    Joe (Moderator) joecar's Avatar
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    I think you are exceeding the TPS, ETC or MAP rationality tables (look in the Engine Diagnostics folder).

    Are you running a MAF...?
    Last edited by joecar; August 26th, 2011 at 03:05 AM. Reason: typo

  3. #3
    Senior Member JUSTASBC's Avatar
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    No MAF. Well it is in the inlet after the filter, but it is unplugged. I am running my IAT sensor where Magnacharger puts it in the intake.

  4. #4
    Lifetime Member driver456's Avatar
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    The P1516 code is whats causing REP.You are supposed to get the P0102 when you have the MAF disconnected,SD mode.Check the wires going into the TPS................Paul

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