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Thread: Contact dealer/ very low fuel. computer wont read

  1. #1
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    Default Contact dealer/ very low fuel. computer wont read

    so I was driving home last Thursday and got a check engine light. after scanning for codes I got a faulty cam shaft position sensor error. A quick trip to autozone and about 5minutes worth of work and the new sensor was in. when I went to turn on the car I received a very low fuel and contact dealer alert. I received the same alert that was cleared about a month ago by disconnecting the computer. I was unable to clear it this time by doing the same or by disconnecting the battery. Ive checked all the fuses and haven't found any that were blown. I ended up buying another computer that was vin matched. I went to upload my tune after installing the new computer and am still getting the same alerts. any thoughts or tips would be appreciated.
    ProCharger D1SC with 3 core Intercooler, Livernois 1C cam with DOD delete, Circel D 278mm 3000-3200 torque converter, Hayden Transaver Plus 30K, F.A.S.T 102mm LSXR intake, Nick Williams 102mm TB, F.A.S.T fuel rails, F.A.S.T 65 lb injectors kooks 17/8 lt, custom 3" cat back exhaust
    Tune is a work in progress

  2. #2
    Beyond Help
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    What code number(s)? And how is the gas gauge acting?
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  3. #3
    Beyond Help Napalm's Avatar
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    which computer? ECU or BCM

    This is probably not a ECU issue. Before you do anything - unlock the car - with a multi-meter check your battery voltage at the terminals. Hopefully it's 12V+.

    Then start the car - do the same check at the terminals. Should be up over 13V DC.

    If you have a soft battery systems can undervolt which makes computers do odd things. This is a common issue.
    If Guns Kill people, then Spoons Cause Diabetes

  4. #4
    Moderator, Retired -Ray-'s Avatar
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    I don't know how I missed this, but it's possible you have a bad ground.
    Rest in Peace Charlie!

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    Quote Originally Posted by RichsGreyGT View Post
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